Several people sustained injuries during clashes between police and participants in a demonstration staged by two opposition parties outside the presidential residence in Yerevan. The clashes occurred at 2:00 a.m. local time (1:00 a.m. Moscow time) on Tuesday. Police blamed opposition members for starting the clashes. The police press service told Interfax that law enforcement officers \"had to use force, sort out the situation and break up the demonstration. Several people sustained various injuries.\" A number of demonstrators were arrested as well. Interfax reported on Monday that the opposition\'s round-the- clock demonstration had moved to the parliamentary headquarters, which is located 100 meters from the presidential residence. The demonstration participants were not able to reach the presidential residence because it was encircled by interior troops. An opposition leader told Interfax that the demonstration would continue until the opposition\'s key demand - the resignation of President Robert Kocharian - was met. Opposition leaders said that Parliamentary Speaker Artur Bagdasarian had promised to meet with them on Tuesday. (Interfax)