India, Dec. 30 -- A 22-year-old construction worker died and three others were injured after a retention wall of a basement collapsed, triggering a soil cave-in at a construction site in Block-E of Sector 56 on Monday evening, police said.

The deceased was identified as Badal Kumar, 22, police said, adding the injured were Govind Kumar, 24, Roshan Kumar, 25, and Sagar, 23, all originally from Bihar.

According to police, the incident took place between 6.30pm and 6.40pm when workers were engaged in construction work in the basement of a site where a residential building is coming up.

Inspector Manoj Kumar, station house officer of Sector 56 police station, said a major portion of the basement's retention wall, measuring about 20 to 25 f...