Police in Greenburgh are investigating a possible hate crime after a sign supporting Black Lives Matter was vandalized.

Police say someone ripped a "Welcome to Greenburgh" sign supporting Black Lives Matter out of the ground on Knollwood Road in the White Plains part of town.

It happened overnight to one of the newly installed signs at various entrance points to the town.

Attached to the welcome sign was one reading, "All lives can't matter until Black Lives Matter."

White Plains-Greenburgh NAACP President Janice Griffith says the vandalism isn't surprising.

"People are still feeling that Black lives don't matter and the very thought of people trying to say that they do matter is very disturbing to some people," says Griffith.

The signs are part of a townwide project to support the equality movement.

A more public mural is going up at the Manhattan Avenue underpass in White Plains, depicting 400 years of Black history in America.

Police believe the sign incident is a possible act of bias.

"Law enforcement holding these individuals accountable, that'll show them. That'll send them a message," says Griffith.

Town officials are condemning the act as well.

"I don't think it really represents what Greenburgh is all about. Greenburgh is a community that always welcomes diversity," says Town of Greenburgh Supervisor Paul Feiner.

The district attorney's office is assisting in the investigation as police continue to look for the suspect.