One person was killed and two labourers were feared trapped under rubble as a portion of the boundary wall of the IG Mess building located near Alaknanda Apartments under Shastri Nagar police station collapsed on Wednesday afternoon, police sources said.

One person identified as Bhola, who was selling bamboo sticks, was killed on the spot while a couple of labourers engaged in finishing work were feared trapped as the 10 feet high and 120 feet long boundary wall collapsed, the sources said.