Sanjay Dutt underwent a routine medical check-up on Saturday morning in the prison cell at Yervada jail after he complained of "uneasiness", sources said.

"There is nothing serious about his condition and there was no cause for worry," prison said.

Sanjay's illness has been attributed to "change in environment" which is a normal occurrence with all newly admitted prisoners, the sources pointed out.

Meanwhile, the actor, sentenced to six-year jail term in the 1993 serial blasts, has now been shifted to a separate cell in Barrack No.3, from the egg-shaped cell where he was lodged on admission, sources said.