San Diego State baseball coach Tony Gwynn has been on a medical leave of absence from the team since March 24, according to a team statement issued Tuesday.

Gwynn, 53, left the team after the effects of cancer treatments caught up with him, an athletic department official told Fox5 San Diego.

According to the team statement, there is no timetable set for Gwynn's return. Mark Martinez is the interim coach in Gwynn's absence.

"I'm on the mend and looking forward to getting back to the team," Gwynn said.

Gwynn was previously away from the team in 2012 when he had surgery to remove a tumor in his cheek. He also battled cancer of a salivary gland and had both lymph nodes removed in 2010.

The Hall of Famer retired as a player in 2001 after 20 seasons with the San Diego Padres. He's coached the Aztecs for 12 seasons.