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A patient shot and critically wounded a doctor at a Berlin hospital Tuesday before turning the gun on himself, police said.

Officers were called to the incident in the Steglitz district in the German capital at around 11 a.m. local time (5 a.m. ET).

Police walk outside the hospital after a doctor was shot Tuesday. HANNIBAL HANSCHKE / Reuters

Police told NBC News that they believe the attack, which occurred at the Benjamin Franklin campus of the Charite university hospital, was motivated by personal reasons rather than terrorism.

"We have no indication that anyone else was injured or involved," Berlin Police said on Twitter, adding that the situation was "under control."

The doctor was being treated in the emergency room for his injuries, according to officials.

The incident follows four attacks in Germany since July 18 that left 10 people dead and dozens injured.