Mumbai, Jan 25 (PTI) Security has been stepped up in Mumbai ahead of the 71st Republic Day celebrations on Sunday, the police said.

The security at important places and buildings has been increased, an official said.

All units of the Mumbai Police including the Bomb Detection and Disposal Squad, Riot Control Police, Quick Response Teams, Force One and Anti-Sabotage Check teams would be on alert, he said.

The official Republic Day function will be held at Shivaji Park in Central Mumbai in the presence of Maharashtra Governor B S Koshyari, Chief Minister Uddhav Thackeray and others.

Extensive security arrangements have been made in and around the ground, the official said.

As a precautionary measure the area has been declared a `no-flying-zone' for drones and similar micro-light remote controlled aircraft.

A mounted police unit, re-inducted in the Mumbai police force after 88 years, will be the attraction of the Republic Day parade at Shivaji Park.

A tableau on Kanhoji Angre, chief of the Maratha Navy, will also be displayed during the parade.

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