BRUSSELS (Reuters) - About 500 Anderlecht football fans and youths of African origin clashed on Friday night in Brussels in fighting organised on the internet, a police spokeswoman said on Saturday.

Television pictures showed police using teargas and water cannon to defend themselves from a barrage of stones and bottles during the clashes near Anderlecht's stadium in the Belgian capital.

Police said the violence had been organised through a website calling for an "attack on all white fans of football club Anderlecht".

It was prompted by a confrontation between Anderlecht fans and a group of youths of north African origin after Anderlecht's Belgian cup final victory last Sunday.

"We have detained 114 people, of whom seven will be arrested and face charges," police spokeswoman Fanny Wellens said.

Fourteen police officers were injured during the clashes, two seriously, she said.

The rioting, which forced the closure of four nearby metro stations, lasted for four hours before some 240 police eventually gained control.

Wellens had no estimates the damage caused by the rioting.

She said police were still present in the area to prevent further rioting on Saturday evening.

(Reporting by Darren Ennis and Jan Strupczewski Editing by Alison Williams)