Ten people were killed and multiple injured in a mass shooting in Buffalo, New York on Saturday, WIVB reported.

The shooting took place at Tops Markets.

Buffalo Police said the shooter is in custody. On Saturday night he was identified as Payton Gendron, 18, of Conklin, New York. The attack has been described as “racially motivated”.

Gendron wore a white paper gown and mask and was surrounded by police officers at his Saturday evening arraignment in Buffalo City Court, according to WKBW-TV. His court-appointed lawyer pleaded not guilty to first-degree murder charges on his behalf.

According to AP, investigators believe the man had been livestreaming the shooting and are investigating whether he posted a manifesto online.

NO News put the number of people shot at nine, and claimed that several had been shot in the head.

Later, NBC Chicago said according to sources, the suspect "entered the store carrying a rifle and wore military-style gear or a type of body armor." It added that the gunman was among the dead.

Erie County Executive Mark Poloncarz tweeted: "I have been advised of an active multiple shooting event at the Tops Markets on Jefferson Street in Buffalo. Police are on scene. Please stay away from the area."

New York State Governor Kathy Hochul said, "I am closely monitoring the shooting at a grocery store in Buffalo. We have offered assistance to local officials. If you are in Buffalo, please avoid the area and follow guidance from law enforcement and local officials."