Tragedy struck the football community in the early hours of Saturday morning, as Clayton Beathard — brother of San Francisco 49ers QB C.J. Beathard, son of country songwriter Casey Beathard — was fatally stabbed to death outside of a Nashville bar.

Clayton was 22 years old and played football at Long Island University. His friend, Paul Trapeni III, was also killed in the incident.

Police said the murders seem to be connected to an argument that happened inside the bar (via The Tennessean):

“The fatal stabbings appear to have resulted from an argument over a woman that began inside Dogwood Bar and then turned physical when the parties went outside,” MNPD confirmed in a press release. “Multiple persons were involved in the outdoor fight during which the two men were both fatally stabbed in their sides.” A third stabbing victim, 21, remains at Vanderbilt with injuries to his eye and arm, police said Saturday night.

In San Francisco, the 49ers narrowly beat the Los Angeles Rams on Saturday night, but C.J. Beathard wasn’t in attendance, obviously, as he was with his family following the tragedy.

After the 49ers win, coach Kyle Shanahan shared an emotional message with his team:

The Tennessean article has a video of the suspects. Police are asking anyone with information about the incident to contact Crime Stoppers at 615-742-7463.