The India batsman spent two separate spells with Lancashire in 2004 and was brought in at Grace Road for the 2005 campaign as a replacement for Australian Brad Hodge, who moved in the opposite direction to Old Trafford.
In nine Frizzell County Championship innings in 2004 he averaged 67.14, hitting two centuries and two half-centuries.
A prolific run-scorer with a triple century to his name in first class cricket and has made 51 one-day appearances for India despite having never featured in the Test side.
Also a useful left-arm spinner and during his first spell with Lancashire he was the most economical bowler in the country in the Twenty20 Cup.
In his first season with Leicestershire, Mongia averaged just over 40 in accumulating 684 first class runs, but perhaps his best performances came in the totesport League where he made significant contributions with bat and ball.
He produced his best form in mid-August when he hit a magnificent 164 in the Frizzell County Championship match against Durham and then followed it up with a match-winning innings of 92 in the totesport League triumph over Sussex Sharks.
Agreed to return to Leicestershire in 2006 in a bid to prove himself worthy of a recall to India's one-day side after dropping out of favour.