Israeli strikes killed one journalist and wounded another in southern Lebanon on Wednesday, rattling a tenuous cease-fire between Israel and Lebanon.

The Lebanese Ministry of Public Health said the Israeli military had targeted the journalists in the town of Tayri, where they took shelter in a nearby house after an airstrike struck a vehicle in front of the car they were traveling in. About an hour and a half later, a second strike hit the house they were hiding in, according to a statement by a Lebanese newspaper Al-Akhbar, which employed the journalist who was killed.

The Lebanese Red Cross said its teams came under fire while trying to evacuate the journalists from the house, forcing them to withdraw. The rescue crews were targeted by a warning strike and machine-gun fire, the Lebanese health ministry said.

Zeinab Faraj, a photojournalist, was rescued from the house. The other journalist, Amal Khalil, who was a reporter for Al-Akhbar, remained trapped under rubble for hours before emergency medics recovered her body, according to the Lebanese Civil Defense.

In addition to Ms. Khalil, the two people in the car in front of her were killed in the strikes, Al-Akhbar reported.

Amid the 10-day truce between Israel and Lebanon, Israel has continued strikes against what it says are Hezbollah targets in southern Lebanon, citing its right to self-defense. Hezbollah, the Iranian-backed militia group, said that it had fired rockets and drones into Israel on Tuesday in response to what it said were violations of the cease-fire. Earlier on Wednesday, the Lebanese News Agency reported that an Israeli drone strike killed one person and wounded two others in another part of the country.

The Lebanese health ministry called the strikes in Tayri a “blatant double breach, involving both the obstruction of rescue efforts for a civilian known for her media and humanitarian work, and the direct targeting of an ambulance clearly marked with the Red Cross.”

The Israeli military denied in a statement that it had prevented rescuers from reaching the injured journalists, and said the incident was under investigation.

A spokeswoman for the Israeli military said Israeli forces had spotted two vehicles emerging from a military building used by Hezbollah. The military observed the vehicles cross what the spokeswoman called the forward defense line, determining the move to be a violation of the truce agreement.

The spokeswoman confirmed that the Israeli military had struck one of the vehicles and the building some of the occupants of the second vehicle had taken shelter in.

Ms. Khalil had covered southern Lebanon, where Hezbollah exercises strong control, since at least 2006. In a tribute to Ms. Khalil, a colleague from Al-Akhbar said she embodied the resilience of the southern Lebanese through her relentless reporting, refusing to leave the front lines of war where thousands of Lebanese had been displaced.

“As with every act of aggression, wearing a press vest did not protect those who wore it from the treachery of the Israeli enemy,” Al-Akhbar said in a statement. “Instead, it has become a danger to journalists’ lives, as part of a systematic Israeli policy aimed at silencing anyone who seeks to expose the crimes and practices of the occupation.”

In a forceful statement on social media, Nawaf Salam, the Lebanese prime minister, accused the Israeli military of war crimes for targeting journalists and obstructing access to medical aid. He said that Lebanon would pursue action to ensure Israel is held accountable with international bodies.

The Committee to Protect Journalists said that it was outraged by the attack, and that it raised serious concerns of deliberate targeting.

“The repeated strikes on the same location, the targeting of an area where journalists were sheltering, and the obstruction of medical and humanitarian access constitute a grave breach of international humanitarian law,” said Sara Qudah, CPJ’s regional director for the Middle East and North Africa.