Five people were shot following a dispute during a West Indian American Day celebration in Brooklyn on Monday, police said.

A senior police source at the scene at Eastern Parkway and Franklin Avenue said a gunman stood on a parade fence on the north side of the Eastern Parkway service road and opened fire on the crowd. An NYPD spokesman told NBC New York that the annual parade, one of the world’s largest gatherings of the Caribbean diaspora, did not appear to be the target of the shooting, which left at least two people in critical condition.

Top NYPD officials, Mayor Eric Adams and Governor Kathy Hochul were among those in attendance at Monday’s parade.

An investigation is ongoing and no suspect has been arrested, NYPD officials said in a news release from the Brooklyn Museum. Authorities are looking for a gunman in his 20s who was wearing a brown shirt with paint stains and a black bandana.

“This was an intentional act by one person against a group of people. There is absolutely no active shooter activity or anything like that on Eastern Parkway at this time,” said NYPD Chief of Patrol John Chell, adding that the parade will continue through the night with a heavy police presence.

Brooklyn, home to hundreds of thousands of Caribbean immigrants and their descendants, hosted the parade as early as the 1960s.

NBC New York’s Romney Smith reports.