Thiruvananthapuram (Kerala): Kerala Opposition leaders on Thursday boycotted the state assembly session after the speaker denied permission to discuss adjournment motion notice given by Congress MLA PT Thomas.

The Opposition also demanded the resignation of Kerala Chief Minister Pinarayi Vijayan over the Kerala dollar smuggling case.

The Congress MLA, earlier in the day, gave an adjournment motion in Kerala Assembly over the show-cause notice issued by the Customs Department on Vijayan's alleged involvement and former speaker P Sreeramakrishnan in the Kerala dollar smuggling case.

However, the Kerala Assembly Speaker has rejected the adjournment motion notice on the ground that the matter is under consideration of the court and has denied any discussion in the house.

Customs Department on Wednesday issued a show-cause on the alleged involvement of Vijayan and former speaker P Sreeramakrishnan in the Kerala dollar smuggling case based on a statement by Swapna Suresh and Sarith PS, the accused in the Kerala dollar and gold smuggling case.