Angry traders clashed with police and Municipal Corporation of Delhi officials in several places of Delhi Saturday as the civic body continued sealing of commercial establishments functioning in residential areas with full vigour.

The MCD stepped up its drive and took action against 466 commercial properties despite widespread resistance as Home Minister Shivraj Patil reviewed the situation arising out of the action at a high-level meeting in Delhi.

Day four of the action saw agitated traders setting afire an MCD vehicle and pelting stones at its personnel in Najafgarh, injuring two of them, and police lathicharging a violent crowd in west zone.

MCD officials said they faced stiff protest from traders and public in several places and made it clear that speedy, effective and smooth sealing process was possible only when the crowds are cordoned off.

Acting on a Supreme Court order, the MCD has so far sealed over 1,000 illegal commercial establishments operating in residential areas.