BRUSSELS, June 20 (Reuters) - Gangs of local youths attacked a Brussels bar and a restaurant used by English fans as celebrations at Turkey's Euro 2000 win degenerated into violence early on Tuesday.

Turkish fans danced, sang and set off fire crackers in central Brussels on Monday evening after their team's 2-0 win over hosts Belgium saw them into the Euro 2000 Quarter-finals.

But the jubilation later turned sour as scattered vandalism broke out in the city centre and Belgian riot police moved in to disperse crowds. Local youths attacked a bar and a neighbouring restaurant in central Brussels wich have been gathering points on recent evenings for English football fans.

'There were several skirmishes by local youths. They attacked two pubs. But everything is returning to normal now. We did use some tear gas but it was as a defensive spray as police vans were encircled by local youths,' a police spokesman said.

It was a third night of violence in a week for Brussels. There were two nights of mayhem before and after England's match against Germany on Saturday, with hundreds of arrests.

With UEFA, soccer's European governing body, threatening to expel the England team from the championship if English fans are involved in any more trouble, all eyes were on English fans' behaviour before Tuesday's crunch match against Romania.

Soccernet reporters saw few English fans on the streets on Tuesday. Belgium's Belga news agency said police had to intervene between groups of British and Turkish fans at one point, but the police spokesman could not confirm the presence of any English fans.

A group of local youths, described by witnesses as Turkish fans, wrecked the 'Au Pot Carre' restaurant, hurling paving stones through the window and injuring some customers.

Some bystanders said the youths were looking for English fans who had filled the bar on previous evenings, but only a few English were at the restaurant at the time.

At the nearby Le Turfiste bar, owner Sylvie Wauters said around 40 English and Swedish men and women were drinking there when a crowd of youths charged down the street throwing bottles and rocks at the window. Customers hid behind the bar or took refuge in the toilets.

'During the whole weekend, we have not really had problems with the English,' she said.

There were scattered incidents of vandalism elsewhere in the city, with some cars damaged by people walking on them. Elsewhere in the city centre, about 100 riot police faced off with several hundred bottle-throwing youths.

Soccernet reporters saw several arrests being made. Police confirmed 10 arrests but said a full breakdown would only be available later on Tuesday.

Riot police, using teargas, dispersed crowds and the city returned to an uneasy calm in the early hours of the morning. Belga news agency also reported a clash between Belgian fans and police in the northern city of Antwerp on Monday night.

In St Josse, a Brussels suburb which is home to many of Brussels' 20,000 people of Turkish descent, the streets were packed with delirious fans on Monday night. They drove around the streets, honking car horns and waving Turkish flags.

Turkish fans occupied the steps of the Brussels' stock exchange, which turned into a sea of red flags. Italian fans, celebrating their team's victory of Sweden in another Euro 2000 match, wrapped themselves in their national flag and joined in the celebrations.

The mixture of Turkish, Italian and English fans in Brussels had raised concern before the match, with one police source describing it as close to a nightmare scenario.

Two English fans were fatally stabbed in Istanbul in April and fans from the two countries clashed again in Copenhagen recently.