Authorities say a 42-year-old Ann Arbor man apparently knocked his wife unconscious with a pineapple during a fight at their home.

AnnArbor.com reports officers responded to University of Michigan Hospital on Friday night after staff notified them of the 32-year-old woman's injury.

It wasn't known exactly when the woman was hit or what prompted the fight. Police say the woman didn't cooperate beyond giving them basic information.

Police say they found evidence of a fight at the home. The Washtenaw County prosecutor's office was being asked to review a request from police for an arrest warrant for the man.