Ananova:

US police are hunting a man who stabbed his son in the bum for refusing to take his hat off in church.

The father, 58, and his 19-year-old son had been attending a church service in Baltimore, Maryland.

After the pair argued about the hat, the father went back to his car for his knife before stabbing his son in the left buttock.

Police have since issued a warrant for the arrest of the father who fled afterwards, reports the Baltimore Sun.

The son was taken to University of Maryland Medical Centre for treatment.