Shiv Sena MP Sanjay Raut was on Tuesday arrested in connection with the attack on a five-star hotel in suburban Andheri last week.
Raut, the Executive Editor of Sena mouthpiece Saamana, was arrested from his residence at suburban Bhandup after the Centre directed the state government to deal sternly with those involved in the attack, sources said.
Around 500 Shiv Sena workers had vandalised the lobby and kitchen of Lalit Group's Intercontinental Hotel to protest against sacking of 21 employees by the management on January 21.
The Rajya Sabha member had allegedly led the group that stormed the hotel, police said, adding he is being produced at Sahar police station.
