BERLIN - A patient shot a doctor before committing suicide at a Berlin hospital on Tuesday, police said, adding there was no sign the incident was a terrorist attack.

A police spokeswoman told AFP that several shots were fired at a university hospital in the well-heeled southwestern Steglitz neighbourhood of the German capital. "According to preliminary information, a patient at the hospital shot a doctor and then killed himself," she said. The doctor is in intensive care.

  A Syrian asylum seeker blew himself up outside a music festival and wounded 15 other people in Ansbach on Sunday, six days after four passengers on a train and a passer-by were wounded in an axe attack by another asylum seeker in Wuerzburg on July 18. The Islamic State group claimed both attacks.

On Friday, nine people were killed in a shopping centre shooting spree in Munich by a German-Iranian teenager with a history of psychological problems but no apparent links to militants.

And a Syrian refugee killed a 45-year-old Polish woman with a large kebab knife Sunday at a snack bar in the southwestern city of Reutlingen.

Police concluded that the incident, in which three others were injured, was likely a "crime of passion".