The Pimpri Chinchwad police has arrested three men and detained two minors in connection with the hurling of a petrol bomb at the office of Shankar Jagtap, brother of Chinchwad MLA Laxman Jagtap, an official said on Thursday.

Three motorbike-borne men had hurled two bottle-based petrol bombs at Jagtap's office in Pimple Gurav area near here on Tuesday. The bombs exploded but no one was injured.