A man was arrested for allegedly stabbing his girlfriend and her 18-year-old son in an apartment building in Anne Arundel County, officials said, and another man was arrested for allegedly firing a gun outside the building.

Timothy Lee Styles, 44, and his 37-year-old girlfriend were involved in an argument at about 10 p.m. Saturday inside her apartment in the 300 block of Highland Drive, Glen Burnie, police said. Styles picked up a kitchen knife and stabbed his girlfriend and her son, police said. The victims were taken to hospitals, where they were treated and released.