However, the Pishevari regime remained in power in Tabriz, and Mohammad Reza sought to undercut Qavam’s attempts to make an agreement with Pishevari as way of getting rid of both. On 11 December 1946, the persian Army led by the Shah in person entered Iranian Azerbaijan and the Pishevari regime collapsed with little resistance, with most of the fighting occurring between ordinary people who attacked functionaries of the Pishevari regime who had behaved brutally.