The Lancaster County Sheriff's Office was called to a Waverly home over the weekend, on reports of a sexual assault.

Sheriff Terry Wagner said his office was called by Saint Elizabeth's Regional Medical Center Friday night on reports of 40-year-old Thomas Maass sexually assaulting his 37-year-old live-in girlfriend.

Wagner said Maass punched her in the face, and forced her head into the ground several times, before he brought out a gun, and forced her to do sexual acts to him.

Maass was arrested for 1st degree sexual assault, terroristic threats, use of a weapon to commit a felony and strangulation. He was also cited for child abuse, false imprisonment and domestic assault.