As Mumbai police probes the threat call received on Sunday at the private residence of Maharashtra Chief Minister Uddhav Thackeray, an anonymous phone caller phoned Maharashtra Home Minister Anil Deshmukh’s Nagpur office, threatening him and NCP chief Sharad Pawar, a minister said.

The Mumbai police on Sunday beefed up security outside Thackeray’s residence Matoshree after a threat call was received at Bungalow’s landline, claiming to be fugitive underworld don Dawood Ibrahim’s aide.

Police have been informed and they are investigating, the state minister, who did not wish to be named, said on Monday, reported PTI.

Jayant Patil, Maharashtra NCP unit president, and Water Resources Minister, said the threats to the “chief minister and Sharad Pawar is a serious matter.”

“Anti-social elements are trying to raise their heads again. The state home department will probe the matter,” he said.

Leader of Opposition in Assembly, Devendra Fadnavis, demanded a proper investigation into the matter. He said police should take care of those who have received such calls.