The US Coast Guard was scouring the waters at the mouth of the Connecticut River on Monday night for three men who were missing after a boating crash, an official said.

Nine people were aboard a boat when it hit a break wall at high speed near Harbor One Marina in Old Saybrook, Connecticut, according to Joey Kellems, lead command center controller with the US Coast Guard’s Long Island Sound sector. The boat broke into pieces and all the passengers went into the water, Kellems said Monday night.

Six people were rescued, but search and rescue teams have yet to find the other three, who were not wearing life jackets, Kellems said.

Details about the time and circumstances of the crash were not immediately available.

The Coast Guard was responding with air and water support, Kellems said. Search and rescue teams from mutual aid agencies also were on the scene.

The coastal town of Old Saybrook is about 30 miles east of New Haven, Connecticut.

This is a developing story and will be updated.

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The Connecticut River, 410 miles long, courses from the top of New Hampshire, along the Vermont border, and then through Massachusetts and Connecticut to the Long Island Sound. Along the way, it flows past countless scenes of human drama.

This summer, reporter Ben James rode his bike the length of the Connecticut – camera and microphone in tow.

In the first in a series, Ben brings us interviews with people working, grieving and getting by along the Upper Connecticut.

“Life on the Connecticut” was made possible through a partnership between NEPM, NHPR, Vermont Public and the New England News Collaborative.

Polls are open 7 a.m. to 8 p.m. today throughout Greater Westfield for the state primary election.

There aren’t many decisions for voters to make, however. Republicans have a three-way race for their party’s nomination for U.S. Senate, among Robert J. Antonellis of Medford, Ian Cain of Quincy and John Deaton of Swansea. Other than that one contested race, the only other names on local Republican ballots will be the incumbent state representatives running for re-election: Nicholas Boldyga (R-Southwick) on ballots in Southwick, Montgomery and Russell; and Kelly Pease (R-Westfield) on ballots in most precincts of Westfield. Neither Boldyga nor Pease has a primary election challenger. In the small section of Westfield that shares a House district with West Springfield, there is no Republican candidate for representative.

Democratic ballots feature more candidates, but no contested races. Incumbent U.S. Sen. Elizabeth Warren (D-Cambridge) is the only person seeking nomination for that six-year seat; she will face the Republican nominee in November. Others seeking the nomination for their current seats are U.S. Rep. Richard Neal (D-Springfield), Governor’s Councilor Tara Jacobs (D-North Adams), Clerk of Courts Laura Gentile (D-East Longmeadow) and Register of Deeds Cheryl Coakley-Rivera (D-Springfield). The region’s two incumbent state senators are running for reelection with no opponents: John Velis (D-Westfield) on ballots in Westfield, Montgomery and Russell; and Paul Mark (D-Becket) on ballots in Southwick.

There are no candidates for any offices on the Libertarian Party ballots in Greater Westfield.

Early voting was available by mail and in person in all communities. Any registered voter who has not already voted can cast a ballot at the traditional Election Day polls today. Registered members of the Democratic, Libertarian or Republican parties can vote in their party’s primary election only. Voters who are registered but unenrolled in a party — also called “independent” — can choose any one of the three party ballots.

Residents of Southwick, Montgomery and Russell vote at their respective town halls: 454 College Highway, Southwick; 161 Main Road, Montgomery; and 65 Main St., Russell.

Polling places in Westfield are the same as in the presidential primary election earlier this year:

• Ward 1: Precinct A at Southampton Road Elementary School, 330 Southampton Road; Precinct B at Westfield High School, 177 Montgomery Road.
• Ward 2: Both precincts at Westfield Senior Center, 45 Noble St.
• Ward 3: Precinct A at Franklin Avenue Elementary School, 22 Franklin Ave. Precinct B at Westfield Technical Academy, Lower Campus, 33 Smith Ave.
• Ward 4: Precinct A at Second Congregational Church, 487 Western Ave. Precinct B at Highland Elementary School, 34 Western Ave.
• Ward 5: Both precincts at Munger Hill Elementary School, 33 Mallard Lane.
• Ward 6: Both precincts at Paper Mill Elementary School, 148 Paper Mill Road.

Westfield voters who are not sure which ward and precinct is theirs can enter their address at www.sec.state.ma.us/wheredoivotema to find their polling place. Voters from any community can enter their information at www.sec.state.ma.us/VoterRegistrationSearch to confirm that they are registered to vote.