Lamba, who landed at the Chhatrapati Shivaji International Airport from Cannes, France, was crossing the green channel when she was intercepted, a senior customs official said.
During the luggage check, she was found carrying jewellery worth over Rs 50 lakh, the officer claimed.
However, customs officials have refused to say how much of the jewellery being carried by the actress was undeclared.
Lamba who was returning from Cannes, where she had attended the opening ceremony of the international film festival, is being interrogated.
The 26-year-old whose debut film 'Yahaan' garnered much critical acclaim, has starred in movies like 'Bachna Ae Haseeno', 'Corporate' and 'Well Done Abba'.
Published 18 May 2011, 12:38 IST