NASHVILLE, Tenn. -- Authorities say a man was killed and three women wounded in a shooting at Tennessee State University in Nashville Thursday night.

The gunman was at large early Friday, the campus was on lockdown and classes were cancelled for the day.

According to the Metropolitan Nashville Police Department's verified Twitter account, the gunfire was apparently prompted by a dispute over a dice game in an outdoor courtyard.

1 person fatally wounded & 2 others hospitalized in Thur nite shooting @ TSU--apparent dispute over dice game in outdoor courtyard. — Metro Nashville PD (@MNPDNashville) October 23, 2015

In a statement, the school said two males who weren't TSU students "may have been gambling. It is reported the two exchanged gunfire and one was fatally wounded."

Get Breaking News Delivered to Your Inbox

CBS Nashville affiliate WTVF-TV reports the man who was killed was shot in the head.

Three TSU students, all females, were transported to an area hospital for treatment of injuries not considered life threatening, authorities said. In a middle-of-the-night news conference, Nashville police said they happened to be walking by the shooting scene and were hit.

No other injuries were reported and other students were escorted safely back to their residence halls.

Tanya Stone, operations supervisor for the Metro Nashville emergency communication center, said early Friday police were "all over the scene" and there was no indication of an active shooter.

The Tennessean newspaper reports police blocked off an entrance to the university and made non-students leave the campus.

The incident comes just over a week after three people were wounded by gunfire at an off-campus party across the street from the college.