Delhi Police has started investigating the murder of five persons in the city's Mansarovar Park Area.
"These are a series of very brutal murders. We will put our entire force into working out this case," said Special Commissioner, Delhi Police, SBK Singh.
"We have started working on whatever inputs we have received. We will share any substantial evidence" he added.
Bodies of a guard and four women Urmila (65) and her daughters, Sangeeta Gupta ( 43), Nupur (35), Anjali (33) were found in the building on Sunday morning.
A sharp weapon has been recovered from the spot and is believed to be used in the crime.