George Zimmerman was charged with assault Monday after his girlfriend called deputies to the home where they were living and claimed he pointed a shotgun at her during an argument, authorities said.

The girlfriend, Samantha Scheibe, called 911 in the early afternoon to say that Zimmerman had smashed a glass table, threatened her with the shotgun and ultimately pushed her out of the house, according to an arrest report. After pushing her out, Zimmerman barricaded the door with furniture and refused to leave, saying that he would talk to police by phone, authorities said.

Deputies used a key provided by Scheibe to unlock the door and they were able to push through the barricade of items, Chief Deputy Dennis Lemma said at a news conference hours after the arrest.

More: APOPKA, Fla.: Girlfriend Says Zimmerman Pointed Shotgun at Her