Police found a man lying on the ground with multiple wounds in Tromsöer Straße at around 6:40 pm on Sunday after being called to the scene by local people reporting a confrontation, they said in a statement.
He had been fighting with another man when one of them pulled out a gun and shot the other in thigh and foot, local paper BZ reported.
The perpetrator then escaped in the direction of Residenzstraße. Detectives are still investigating the background and possible motives for the crime as they seek to find the suspect.
Meanwhile, the victim underwent emergency surgery at the nearby Virchow clinic soon after the incident. His injuries are not life-threatening. Police are waiting for him to recover sufficiently to give a statement on the events.
The attack followed a similar incident in the same district on December 26th, when a man was wounded in a fight between him and three others armed with a gun.
A week and a half later, the police said they had seven suspects in the crime. They believe the assault resulted from a family feud.
Despite these recent events, the number of cases of assault in Berlin involving firearms has been on the decline.
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According to the most recent police crime statistics, the number of shots fired during crimes fell by roughly 40% between 2005 and 2014.