Some unidentified persons attacked the office of a BJP worker and businessman, who had opposed MNS president Raj Thackeray's remark about burning the auto-rickshaws, in Dindoshi area in north Mumbai late on Saturday night.
The attack comes a day after the BJP worker had written a strong-worded open letter to Raj Thackeray warning him of befitting response to his threats.
Raj, a few days ago, had asked his party workers to burn the new auto-rickshaws whose permits have gone to non-Maharashtrians.
He later called off the agitation.