The phone call that threatened to kill KPCC president Ramesh chennithala was originated from Kalghatgi in Dharwad district of Karnataka.
According to the police, the calls were made from two separate coin booths near Dharwad bus stand.
The first call saying that two persons have left from Mumbai to kill Chennithala was made to a Delhi-based mediaperson’s cell phone.
The second call was made to the KPCC office later.
The third call was made to a channel reporter based in Kasargod on July 5.
The caller reportedly talked in Malayalam and Tulu mixed slang, the police said.
The police team led by Special Branch ASP K K Aji left for Dharwad the following day.
The police team returned on Saturday.
The police suspect that the call was made by someone from the border places like Sullia and Puthur.