(LATIMES) — Aron Ralston, the hiker who survived by severing his own arm after being trapped by a boulder, is expected to appear in a Denver courtroom Monday to face domestic violence charges.

Ralston and his girlfriend, both 38, were taken into custody in Denver early Sunday morning following a fight; it is alleged that mutual blows were exchanged. The couples’ 8-week-old daughter was present at the time, according to local TV station KDVR.com

Ralston’s father, however, told the Denver Post that his son did not strike the woman. “This is just two people trying to work out a difficult relationship,” he told the newspaper.

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