LONDON, Aug. 20 (Xinhua) -- Climate change protesters clashed with police Sunday night near London's Heathrow airport, leaving six people injured, local media reported Monday.

    No disruption of the airport or major roads was reported, but skirmishes between more than 1,600 police and 1,400 protesters continued into the night, The Guardian newspaper said.

    Climate change protesters are continuing to blockade the offices of Heathrow Airport operator BAA, accusing the police of using unwarranted force to contain them.

    Up to 200 activists are camping in the company's car park as part of 24 hours of "direct action" by members of the anti-aviation Camp for Climate Action.

    The police said Sunday night that no injuries to protesters had been reported, but a policeman had been injured after being knocked from his horse.

    The day of direct action began at noon with a peaceful march to the center of Harmondsworth, a village that will be affected by the proposed third runway.

    Police brought in horses and reinforcements, but there was little disruption of traffic. Protesters leaving the camp to try to get to the BAA building were met by police in a field of oilseed rape.

    Skirmishes continued for 40 minutes, with the police chasing and eventually corralling more than 100 people into a circle.

    Eight protesters chained themselves together, temporarily blocking the entrance to the British Airways World Cargo perishable goods terminal. All eight were arrested late Sunday night.