Prince George’s County, Maryland state, Berwyn Heights and Greenbelt police all responded for traffic and crowd control when, shortly before 3 p.m., officers walking in the park heard multiple gunshots through the crowd, authorities said.

Greenbelt Police Chief Richard Bowers said eight to 10 gunshots went off near a pavilion inside the park. Police said the teenagers had been engaged in a water gun fight.

“The students at the park began to flee in mass out of the park onto Hanover Parkway and we believe the suspect was able to escape with the crowd,” Greenbelt police said in a news release.

Bowers said the five victims were all males between 16 to 18 years old. The Prince George’s Fire Department said the victims were taken to hospitals. No arrests had been made as of late Friday afternoon, but Bowers said police are looking for one shooter believed to be the same age as others at the park.

Eleanor Roosevelt High School nearby was placed on lockdown because of the shooting, and afternoon activities were canceled.

“It’s really concerning that you have a group of kids in a park and it turns violent like this for no apparent reason,” Bowers said.

Bowers said police will work through the weekend to investigate, work that will include scrubbing police body-camera video and cellphone videos from people at the park.

“We did not know that [the skip day] was going to occur,” he said. “We do everything we can to monitor that park,” which sits across the street from the police station.

Prince George’s is one of many jurisdictions in the region trying to stem increasing youth violence. More adolescents than adults have been arrested on carjacking charges in the county in the past three years. And last year, 92 juveniles were arrested on suspicion of possessing a gun, according to county police department data.

To address youth violence, school officials have approved metal detectors on campuses and required clear backpacks. Youth in recent years were subject to a countywide juvenile curfew. And the county launched a program where adult volunteers monitor certain streets that students use to get to school to discourage bullying, fighting and other misbehavior.

Though crime overall is down in Prince George’s County compared to the same time last year, as of Thursday, violent crime is up by about 9 percent. Police data shows that assaults investigated by Prince George’s police are up 17 percent, with 511 cases reported this year compared to 436 for the same time last year. As of Thursday, county police have investigated 71 nonfatal shootings in Prince George’s, down from 76 the same time last year.

The shooting in Greenbelt occurred about 2½ hours after three men and a 16-year-old were wounded in a shooting while gathered in a parking lot in the Trinidad neighborhood of Northeast Washington. A D.C. police spokesman said investigators do not believe the shootings in the District and in Maryland are related.

The shooting in D.C. occurred about 12:20 p.m. in the 1200 block of Mount Olivet Road NE when one or more occupants of a four-door sedan shot at people in the parking lot.

Darnell Robinson, an assistant D.C. police chief, told reporters that the sedan never came to a stop as the shots were fired. He said the victims scattered after the shooting. The wounded men were taken to a hospital in ambulances, and the male teenager showed up at a hospital a short time later.

Robinson said police found the vehicle in the District but had not made an arrest as of Friday afternoon. In March, Mount Olivet Road was included in one of the District’s Drug Free Zones, temporary areas allowing police more authority to confront people suspected of illegal drug activity.

D.C. police said they do not know of a motive in Friday’s shooting, which occurred on a street singled out by an advisory neighborhood commissioner as a problem area. The commissioner said in March that people gather along Mount Olivet Road and that sometimes they have firearms.

“That is what we want police to focus on,” the neighborhood commissioner said.

Crime overall in D.C. is down, with violent crime down 22 percent compared to the same time last year, according to police data.

Nicole Asbury contributed to this report.

Oscar Kuldell and his two brothers, who together ran a construction company, built this house and others near Observatory Circle for their families. For several decades, this one was a multifamily house, with four units (two on the main level, two on the second level), each with a parlor, a dining area, a kitchen, a bathroom and a bedroom.

The four-level house is mostly symmetrical. The front door opens to a foyer with stairs. On one side is a family room, on the other a living room, each flanked by a sunroom. Also on this level are the library, with floor-to-ceiling shelving, and the formal dining room, with access to a deck. At the rear of the house is the kitchen, which has an island with a sink and connects to a casual dining or family room. The deck can also be accessed from the kitchen. Near the back of the house, a spiral staircase connects the main level and the second floor.

It became a single-family house in the 1990s, after it was bought by Lynn Fischer, who has been an anchor for WTTG-TV (Channel 5) and the host of a Discovery Channel cooking show.

Fischer made major changes — which included soundproofing the kitchen, where she filmed part of her show. She built a primary bedroom suite with an en suite bathroom, removed walls on the main level to widen the kitchen, and added central air conditioning and heating.

By the time the current owners moved to the house, in 1998, the transformation from four units to one was complete. They added storm windows and a two-car garage with a roof deck, converted an old kitchen into a bathroom and added shelving in the library. Despite the many changes, the house still has original details, including the chandeliers in the library and the foyer.

On the second floor, the primary bedroom suite has a fireplace, two walk-in closets, a gym and a bathroom with a shower, a tub, two toilet closets and a laundry room. This level also has three more bedrooms, two with en suite bathrooms, and there is an office.

The third floor has two bedrooms with vaulted ceilings. They share a hall bathroom with a skylight. This floor also has storage space.

On the lower level, the two-car garage can be reached from a bedroom and a living room. This level, which could be used as an in-law or au pair suite, also has another bedroom, a large storage space, a laundry area, a dining room, a bathroom and a kitchen.

The house is surrounded by greenery, with lawn on either side and a narrow strip of grass in the front and the back.

3615 Davis St. NW, Washington, D.C.

• Bedrooms/bathrooms: 8/6
• Approximate square-footage: 7,400
• Lot size: 8,000 square feet
• Features: This house in D.C.’s Observatory Circle neighborhood was built from a kit in 1923. It has a deck and a lower-level suite with two bedrooms. The garage has space for two cars.
• Listing agent: Jonathan Taylor and Maxwell Rabin, TTR Sotheby’s International Realty