One person has been arrested from Nashik and another detained from Jalgaon in connection with the threat call made at the residence of Maharashtra Chief Minister Ashok Chavan. "One Abdul Gani Shah has been arrested from Nashik. According to the preliminary inquiry, he made the call to the CM's residence from outside Dheolali railway station. We have recovered eight SIM cards from him and a diary containing the telephone numbers of several ministers," said ATS chief.