New Delhi, Dec 1 (IANS) Congress president Sonia Gandhi has asked for a list of absentee MPs and warned of firm action against those who skip parliamentary proceedings, a party leader said Tuesday, a day after question hour in the Lok Sabha virtually collapsed because of missing members.

"She has taken an extreme view of it (Monday's incident). She has asked for the list of the party MPs who were not present in the house Monday. And action will be taken against those who take parliamentary proceedings in such a light manner," said a Congress leader close to Gandhi.

He said the party leadership was not satisfied by the explanations given by the MPs for missing parliament Monday.

"Most of the MPs have said their flight got delayed and train got delayed... while explaining the reasons for their absence. Such excuses are not acceptable," the leader told IANS.

"It was a lesson to learn," admitted Congress MP Shruti Choudhary, who was absent along with her party colleagues Harsh Vardhan, Madhu Goud Yaskhi, Anto Antony, Vikrambhai Arjanbhai Maadam, P.T. Thomas, Kodikkunnil Suresh, Jhansi Lakshmi and Eknath Gaikawad.

They were among the 34 MPs with questions listed against their names who were not in the house during question hour Monday.