The Mumbai Police has imposed fine on riders of two motorcycles for not wearing helmet while offering lift to Bollywood actors Amitabh Bachchan and Anushka Sharma on the city roads, an official said on Wednesday.

"Amitabh and Anushka both have been fined through their riders for bike ride without helmets on Mumbai roads," a senior police official told PTI.

The fines were imposed in the two separate incidents after some people pointed out on social media that the riders violated the mandatory helmet rule, he said.

The Mumbai Traffic Police uploaded on their Twitter handle copies of the challans issued on Tuesday against riders of both the vehicles.

Actor Anushka Sharma was recently seen riding pillion on a motorbike, with both the riders without helmet. Netizens criticized it and some people had brought it to the notice of Mumbai Police by tagging the clips on the police's Twitter handle.

Taking cognizance of it, the police issued a challan against the vehicle rider along with a fine of Rs 10,500, the official said.

"Challan has been issued under Sec 129/194(D), Sec 5/180 & Sec 3(1)181 MV Act to the driver along with a fine of Rs.10500 and been paid by the offender," Mumbai Traffic Police tweeted along with a copy of the challan.

Megastar Amitabh Bachchan was also a few days back seen taking lift on a motorbike to travel amid the city traffic.

He had shared pictures of the ride on his social media account and the riders were seen without helmet.

Netizens pointed out that the rider and the actor were not wearing helmet, following which the Mumbai Police said they had shared this information with the traffic branch.

The traffic police in a tweet late Tuesday night said, "Challan has been issued under section 129/194(D) of MV ACT along with fine of Rs 1000 and it is been paid by the offender."

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Days after the police initiated action against him for riding a bike without a helmet, Amitabh Bachchan flipped from the first version of the story. Now the actor says he was riding the bike on a film set with due permission, unlike earlier, when he had claimed to have taken a lift from a fan.

Taking to his blog on Tuesday, he wrote, “Much made out of the bike picture! How you moving on the street with stranger? No security? You are loved take care? And then NO HELMET! This is on location shoot on the street of Mumbai. Formal permission taken for shoot. One lane in the region BLOCKED off by Police permission for shoot. The lane barely 30-40 metres. The dress I wear is my costume for the film,” he explained in his blog. The actor insisted that he was “just “fooling around by getting on the bike of a crew member”.

Saying that he’s not the only one who’s taken a ride like this, Bachchan adds, “I had seen Akshay Kumar do this to get to location on time.” He concludes: “Thank you all for your concern and your care and love and your spanking me and trolling.”