An offence has been registered against Maharashtra Navnirman Sena (MNS) chief Raj Thackeray for allegedly wielding a sword during a public rally in Maharashtra's Thane city, police said on Wednesday.

Offences under sections 4 and 25 of the Arms Act have been registered against Thackeray and the MNS' Thane and Palghar district chief Avinash Jadhav and Thane city chief Ravindra More, an official said.