Home Minister Rajnath Singh spoke to Delhi Police Commissioner Alok Verma over the death of one person in an explosion in north Delhi's Naya Bazar area on 25 October.
The Home Minister, who is in Bahrain, telephoned the Delhi Police Commissioner to take stock of the situation in the national capital.
Verma briefed him about the incident and said steps have been taken, official sources said.
The Home Minister instructed the Delhi Police Commissioner to arrest those involved in the incident and take all possible measures to ensure peace in the city.
One person was killed and two others were injured in the explosion. A senior police officer said the cause of the explosion was yet to be ascertained.
Forensic teams and officers from the Special Cell are on the spot and collecting samples. Further details are awaited. Delhi Police personnel have been maintaining a tight vigil in view of the festive season.