Making a suo motu statement in the Lok Sabha, Home Minister Sushilkumar Shinde gave details of the incident in Gandhi Nagar area of East Delhi on April 15 and the investigations conducted so far.
He said the Station House Officer (SHO) and the Investigating Officer (IO) have been placed under suspension taking note of the lapses in the investigation.
The victim's parents had alleged that some police personnel had offered them Rs 2,000 and told them to keep quiet over the issue.
Shinde said two accused have been arrested in connection with the case.
Medical examination of the first accused, arrested from Muzaffarpur district of Bihar on April 19, has been conducted for DNA, he said.
