It seems Prithviraj is the hot favourite for cop roles in Mollywood this season. Just after the release of his movie Thriller last month, in which he played the role of Niranjan IPS, Prithviraj has again signed up for a cop's role in director Roshan Andrew's movie titled Mumbai Police which will also have Tamil actor Arya as Prithviraj's partner. Director Roshan Andrew, who is currently busy with Mohanlal's Casanova will begin work for Mumbai Police from February.