A 34-year-old man opened fire in a nightclub in the southern German city of Konstanz on Sunday, killing one person and seriously injuring three others, police said but they ruled out 'terrorism' as a motive.

Police say at least 17 people were shot at the Power Lounge nightclub in Little Rock after a dispute broke out.

Former New England Patriots football star Aaron Hernandez was found not guilty of murdering two men outside a Boston nightclub in 2012.

Islamic State claimed responsibility for the killing of 39 people celebrating the New Year inside a fabled Istanbul nightclub, an act of terrorism that has become grimly familiar in Turkey as it fails to keep the violence in Syria from spilling into its cities.

Francois al-Asmar, a Lebanese national wounded in Sunday's attack in Istanbul, said he acted like he was dead after being shot by the gunman.