New York City Mayor Eric Adams said on Monday there was an "active shooter" investigation underway in central Manhattan, while the FBI added it was also providing support at what it called an active crime scene.

Shane Tamura was identified as the Manhattan active shooter suspect. That's according to the New York Post, which cited law enforcement sources. Authorities have not yet formally named the gunman, who was pictured in a widely published photo toting a rifle and calmly walking down the sidewalk

An active shooter incident has been reported in midtown Manhattan with a suspect allegedly holding a long gun inside a high-rise building on Park Avenue. At least one police officer and one civilian have been killed,