New Orleans signed Lemieux on Monday, Nick Underhill of NewOrleans.Football reports.
Lemieux sustained a ruptured biceps Wednesday and was placed on injured reserve Thursday, Tom Pelissero of NFL Network reports.
Lemieux (groin) is active Sunday against Buffalo.
Lemieux (groin) has been ruled out ahead of Sunday's game against Miami, Dan Salomone of the Giants' official site reports.
Lemieux, who was placed on injured reserve in December with a toe injury, participated in training camp practice Monday, John Fennelly of USA Today reports.
Head coach Brian Daboll said Wednesday that Lemieux (toe) will go on injured reserve, Dan Salomone of the Giants' official site reports.
Lemieux (toe) is ruled out for Saturday's game against the Vikings, Jordan Raanan of ESPN.com reports.
Lemieux (toe) is out for Sunday's game against the Commanders, Matt Citak of the Giants' official site reports.
Head coach Brian Daboll said Friday that Lemieux (toe) won't play in Sunday's game against the Eagles, Dan Duggan of The Athletic reports.
Lemieux (toe) will not play in Sunday's game against the Commanders, Adam Caplan of SiriusXM NFL Radio reports.