Two Texas State University students were found dead Sunday morning in what police are describing as a possible murder-suicide.

San Marcos police said a friend found Matthew Pfluger and Connor Shannon, both 24, at a residence at the 1400 block of Highland Drive around 9:30 a.m. Both men were residents of the home and were described as close friends, officials said.

Police said that Pfluger shot Shannon multiple times inside their home before unsuccessfully attempting to kill himself with a knife. Pfluger then went to the backyard and shot himself in the head, police said in a news release.

Next of kin has been notified.

This is the second murder-suicide San Marcos police have investigated this year and the fourth homicide of 2019, police said.