WEST HAVEN >> The city will observe the 16th anniversary of the Sept. 11, 2001, terrorist attacks Monday, Sept. 11, with a flag-raising ceremony at 6:30 p.m. at the Bradley Point Park flagpole.

The ceremony will be followed by a candlelight vigil at the city’s 9/11 memorial.

The memorial service will begin with a presentation of the colors by the West Haven Police Color Guard and a flag-raising by the West Haven Fire Department Honor Guard and the New Haven County Firefighters Emerald Society Pipes and Drums, the city said in a news release.

The flag-raising will honor the memory of the nearly 3,000 people who died in the commercial airliner attacks that destroyed the World Trade Center’s Twin Towers in Lower Manhattan and damaged the Pentagon in northern Virginia, outside Washington, D.C.

Remarks from various officials and dignitaries, including Mayor Edward M. O’Brien, will follow.

The candlelight vigil will take place at 7 p.m. at the Richard S. Gabrielle Sept. 11 memorial on the shorefront walkway next to the Savin Rock Conference Center, 6 Rock St.

Members of the Rotary Club will distribute candles and programs.

Gabrielle, who worked in the World Trade Center complex, was West Haven’s only victim of the attacks. An insurance broker at Aon Corp., Gabrielle, 50, was last seen on the World Trade Center south tower’s 78th floor.

The city will fly flags at half-staff in recognition of the national day of remembrance, which Congress designated Patriot Day in 2002.

The vigil will include taps played by former West Shore Fire Department Lt. Kevin McKeon and a Celtic folk performance by Irish singer-songwriter Liz McNicholl, including the song “The Bravest,” a tribute to the heroes of 9/11.

West Haven’s Nora Mullins and Grace Kelly Nowak will sing “The Star-Spangled Banner” and “God Bless America,” respectively.