Islamic State (ISIS) posters and graffiti surfaced at five places in Sabathu Army Cantonment area in Solan district of Himachal Pradesh on Tuesday.
One of these posters threatened bomb blasts from Himachal Pradesh to Nepal using washing machines and television sets.
The Himachal Pradesh Police has said that it is not taking the issue “lightly”. They have registered an FIR in this regard under relevant sections of the IPC.
"Many people have been questioned in this regard but so far, no arrest has been made," said Additional Superintendent of Police Manmohan Singh, who rushed to the spot immediately after receiving the information.
Forensic teams also visited all the five places, examined the spot and collected evidences.
"It seems to be some mischief, but we are not taking it lightly and probing thoroughly to identify the accused," said a senior police official.
Earlier, the walls of a temple at Dharampur, 15 Km from Sabathu were defaced, with inscriptions like "ISIS coming soon" in English and Arabic.
The police is trying to establish link between both the incidents.
In December last, 23-year-old Abeed Khan from Bangalore, with alleged IS links, was arrested by a National Investigation Agency (NIA) team from a church in Banjar in Kullu district. He was living with fake identity.
(With PTI inputs)