After being released from jail, Sanjay Dutt is gearing up for his first film. The actor has been sweating it out as part of his prep for Siddharth Anand`s next, which is an action flick.

Since his character in the film requires him to perform commando-style stunts, "Munna Bhai" star has been training in martial arts on the ground floor of his Pali Hill home. However, he seems to want to keep those rigorous sessions low key. It so happened that when he was recently clicked by the paparazzi in his boxing gloves, he got upset and decided to cover the training area so that such an episode is not repeated. Hence, Dutt has now covered the boundary of his house with green cloth. The actor wants to beat prying eyes peering into his training enclosure.

Confirming the same, a source close to Dutt added, "He has been training at his building`s gym which has grabbed the attention of his fans and passersby, who tend to crowd the place. So, he has covered the area to avoid the disturbance."

The film in question is actually the Hindi remake of Sylvester Stallone`s 'Rambo' and involves some hardcore action for which the actor has been training religiously with master Shifu Kanishka Sharma. Dutt's prep will continue for another month after which the film will go on floors.