Jigar Makwana, a private detective residing in Kashimira area, was abducted from his house on June 1 by a group of four persons over a dispute, Police Inspector (PI) Anil Kadam of Kashimira police station said.
The accused took him to Jogeshwari area, where they thrashed him and robbed him of Rs 30,000, following which they released him, the PI said.
The four miscreants were identified as Pankaj Wagh, Rohit Shetty, Govind and Rahul, he said.
A case has been registered under relevant sections of IPC, he said, adding further investigation is on.