UFC and Strikeforce veteran Benji Radach has died at the age of 45.

Reports of his death were first posted on Facebook by family members, including Radach’s stepmother and brother. Additional sources confirmed the news to MMA Fighting on Monday.

The cause of death has not yet been determined at this time.

Radach has been a mainstay in combat sports since his MMA debut in 2001 and has been considered a tough opponent over the years, no matter who he competed against.

After a perfect 10-0 start to his career, Radach signed with the UFC in 2002, where he fought three fights and posted a 1-1 record with one no contest. Radach actually scored a knockout in his debut, but the win was overturned after the Louisiana Athletic Commission deemed he held onto the cage before the end.

Radach earned his first official UFC victory by decision over Matt Serra’s younger brother Nick Serra before suffering a loss to Sean Sherk and leaving the promotion.

He finally landed in the IFL in 2007, where he fought six times in a single calendar year, compiling an impressive record of 5-1, including wins over Brian Foster, Gerald Harris and Bristol Marunde.

Radach also fought in Elite XC, where he scored a knockout victory over Murilo Rua – the older brother of UFC Hall of Famer Mauricio Rua – before eventually moving on to Strikeforce to face the likes of Ovince Saint Preux and Scott Smith.

His last fight was in 2015, when he suffered a loss to Ben Reiter at Bellator.

Outside of martial arts, Radach also prevented a robbery in 2004 when an assailant attempted to hold up the restaurant at gunpoint while he was eating breakfast with fellow UFC veteran Dennis Hallman. Radach intervened by tackling the robber to the ground, wrestling his gun, and finally throwing a punch that broke his jaw and left him unconscious while they waited for police to arrive.