A man who was asked to leave a baby shower in Lansdowne because he was drunk returned and stabbed four people, authorities said.
Brian Thiele, 22, was arrested at his home Saturday night.
Thiele arrived drunk at the gathering, attended by up to 80 people, and said he was looking for his girlfriend, police and witnesses said.
When asked to leave, Thiele pulled out a knife and made threats, then left, witnesses said. He returned about four hours later and stabbed the people, police said. All the victims were treated at area hospitals and released.