New Delhi: Security forces rushed to the Delhi Legislative Assembly on Monday after a bomb threat email triggered a major alert, with authorities launching a swift multi-agency response, police sources said.

According to IANS, the email claimed that 15 RDX bombs allegedly filled with cyanide gas had been planted inside the Assembly premises and warned of detonations within three hours. The message also made a communal demand, calling for the immediate removal of Muslim employees.

The alert was communicated by Assembly authorities, following which teams from the Delhi Police, bomb disposal squads, dog units and the fire brigade were deployed at the premises.

A thorough search of the premises was carried out, the source said.

"Nothing suspicious has been found so far. The situation is under control," a senior police officer said, adding that further investigation into the source of the email is underway.

The development came barely days after a masked man drove an SUV through one of the Delhi Assembly’s boundary gates and placed a flower bouquet in the Speaker's vehicle parked on the porch before fleeing, triggering a high alert on Monday afternoon.

Police later detained three people, including the driver, and seized the vehicle, a Tata Sierra, from north Delhi's Roop Nagar.

The incident occurred at 2.10 pm when Speaker Vijender Gupta was in his office at the Assembly, which is secured daily by over 100 security personnel from the Delhi Police and the CRPF. The entire incident happened very quickly, in just five to seven minutes, an official said.

(With inputs from PTI)