Police in Lincoln, Neb., are investigating the armed robbery of a pastor at his church.

Police say the pastor, 52-year-old Christopher Anderson, opened a door at Glad Tidings Assembly of God for someone who was knocking late Saturday night. The man asked for money, but Anderson said he didn't have any to give.

Anderson told police that when he started to close the door, the man grabbed him by the hair and slammed his face against a table.

Police say the robber held a knife to the pastor's face as he took his wallet, watch and gold wedding ring.

Officer Katie Flood said Monday that no arrests have been made yet.