NEW YORK -- Carmelo Anthony and Kevin Garnett got into an altercation in the bowels of Madison Square Garden after the Boston Celtics' 102-96 win over the New York Knicks on Monday, and building security and New York City police officers were called upon to defuse the incident, two sources with knowledge of the incident told ESPNNewYork.com.

"It was like being in the schoolyard," said one witness to the incident.

The two stars did not come to blows, according to a police source. But Anthony was still hot after getting into a confrontation with Garnett in the fourth quarter of the Celtics' win that resulted in a double technical.

After the game, Anthony angrily walked off the floor and out of the tunnel that visiting teams use to exit the floor, instead of exiting out of the Knicks' tunnel.

Tyson Chandler appeared to try to stop Anthony, but he blew by the Knicks center. According to one of the sources with knowledge of the incident, Anthony approached the Celtics' locker room and was screaming. It is unclear whether his ire at the time was directed at Garnett.

Anthony approached Garnett near the Celtics' team bus. MSG security and the police intervened, according to a source.

A video posted by Comcast Sports Net New England showed Anthony waiting outside the team bus as Knicks coach Mike Woodson appeared to try to calm Anthony down. Team and building security were also present, as were several uniformed police officers.

The incident could result in a suspension and/or fine for Anthony and Garnett.

Woodson declined comment on the incident.