Saint John Police are on the scene of an incident of a "violent nature" on Peters Street in the city's core.

Police received the call around 11:45 a.m. and arrived on the scene to find a man on the sidewalk, who apparently fell out a third-storey window that appears to be about 10 metres high, said Sgt. Chuck Elgee.

The sidewalk is littered with glass and other debris.

A person inside the building was also hurt and suffered lacerations.

Both people were taken to hospital.

Police say it's an isolated incident and not a random act. The suspect and victim were the only two involved, and investigators are not looking for anyone else, they said.

The police force's major crime unit is handling the investigation.

The area has been blocked off to traffic and pedestrians.