Mumbai Police's crime branch on Wednesday arrested three men from Kashimira area for allegedly trying to extort Rs 80 lakh from a diamond merchant by claiming the man he had entrusted with the responsibility to take diamonds to Dubai was detained by Customs officials, a police official said.

The accused trio, who are natives of Gujarat but currently staying in Mumbai, are identified as Vijya Hirapra (25), Ravi Gogori (33), and Kisan Shiroia (20), he said.