One killed, three injured in German nightclub shooting

July 30 (UPI) -- German authorities said one person was killed and three others were injured in an early Sunday nightclub shooting in the city of Konstanz.

Konstanz police and prosecutors said in a joint news release that a gunman opened fire at the Grey nightclub about 4:30 a.m. Sunday and was shot in an exchange of gunfire with police. The suspect died after undergoing emergency surgery for his wounds.

The gunman killed one person and injured three others, police said.

One police officer was wounded in the shootout, but officials said his wounds were non-life-threatening.

"Many guests had left the building panic stricken or were hiding when the shots were fired," police and prosecutors said.

Special commando forces and a police helicopter were deployed following the attack, but investigators later concluded the man likely acted alone.

The suspect was described as a 34-year-old man originally from Iraq. Police said the man had been living in Germany for a long time and was not an asylum-seeker.

"According to our investigations this is not terror-related, unless the gunman radicalized himself within the last three days," Fritz Bezikofer of the Konstanz police told CNN. "At this moment we believe that he may have had alternative motives."

Bezikofer did not offer further details on the suspected motives.