Unidentified men attacked Shiv Sena corporator from Ambarnath, Pappu Gunjal in broad daylight on Friday. He later succumbed to the injuries in a hospital.
The Shiv Sena corporator from ward number five of Ambarnath Municipal Corporation, was attacked at around 10 am near MSEB office, Morivali, when he was on the way to his office.
As many as 13 persons attacked him with swords and other sharp-edged weapons, police said.
Gunjal was rushed first to Central Hospital, Ulhasnagar, and from there to a private hospital in Kalyan where he died while undergoing treatment.
Police suspect that political rivalry could be the reason for the murder. Nobody had been arrested yet, said Gajanan Kabdule, Thane police spokesperson, adding that the probe is on.