A fight between two groups broke out Friday night in rue de Bouillon, close to M-Club and the local cemetery.

The authorities are still investigating the incident. Neither the reason of the assault nor the attackers' identities - the police are looking for a group of 3-4 persons - are known yet. One of the two victims was quite severely injured.

Police are calling for witnesses: if you have relevant information, contact the Luxembourg city police department or call the phone number 113 .