Laar arrived at Toompea Castle in a wheelchair at 13:00, and took a seat at the rear of the hall, where fellow MPs shook hands with him, reported uudised.err.ee.

"Dear Mart, it's my great pleasure to greet you and that you are here together with us,“ Parliament Speaker Ene Ergma said when opening the session.

Laar was Estonia's first elected prime minister and the former head of IRL, the Reform Party's partner in the government coalition. He spent several months in the hospital after his illness. His seat in Parliament was filled by Andrus Saar. Laar has been active in politics in recent months working from home.

Ergma had called the supplementary parliamentary session on Friday to continue an agenda unfinished due to opposition filibustering that began with the second reading of the 2013 budget bill earlier this month.