Seventeen people, including 12 labourers, were reportedly injured in the incident.
Two out of the 15 injured in the Metro crane are believed to be in a serious condition.
Giving details about the incident, Delhi Metro Rail Corporation (DMRC) spokesperson Anuj Dayal said, "The incident happened at around 12.15 pm at the under construction site of Metro in Saket with in the barricaded area. It appears to be a mechanical failure of the crane. One crane was lifting another crane, which overturned."
He also said that the crane belongs to Larsen & Toubro company, but denied reports that anyone has been injured.
These cranes were on the job at Saiad-ul-Ajaib Metro station in Mehrauli, near Garden of Five Senses.
Other Metro accidents this year:
- September 13, 2009: Metro Train derails due to problems with the track between IP Extn and Yamuna Bank
- August 12, 2009: A train from Dwarka to Yamuna Bank derails in Dwarka. No casualties
- July 12, 2009: Portion of an under construction bridge collapsed when its launching girder lost balance as it was being erected at Zamroodpur, near East of Kailash, on the Central Secretariat-Badarpur corridor slated to be opened September 2010. Five people were killed and 15 others injured