"I am confident about the operation which is underway and the situation is under control," the home minister told reporters at the airport here before heading for Neemuch to attend the CRPF Raising Day Function.
Singh said he had spoken to Punjab Chief Minister Prakash Singh Badal, the National Security Adviser Ajit Doval, Director General of BSF and Union Home Secretary L C Goyal.
The home minister, however, refused to give details of casualties.
When asked by a reporter whether the attack could be a reaction to the capital punishment awarded to Yakub Memon in 1993 Mumbai blasts case or it was a case of cross-border terrorism, Singh refused to comment. "The operation is going on and I won't say anything more than this at present," he said.
Four heavily armed terrorists wearing army uniform today went on a rampage in Gurdaspur district, attacking a bus, a health centre and a police station leaving five persons, including a policeman dead, and several injured.