The event was reduced to 54 holes after all play was washed out on Friday. The second round was delayed on Saturday, but the round was completed Sunday morning. The third and final round was scheduled for Sunday, but a three-hour thunderstorm stoppage ruined those plans.
Play resumed at 1:00 p.m. ET Sunday, but darkness crept in and forced officials to complete the tournament on Monday.
The six remaining groups will return to Castello di Tolcinasco Golf and Country Club at 1:30 a.m. ET Monday to complete the tournament. This will be the first Monday finish on the European Tour since the 2001 dunhill links championship.
Frenchman Gregory Havret and Northern Ireland's Graeme McDowell are knotted in first at 18 under par. Havret will have two holes to play on Monday while McDowell will need to complete the final four holes.
Thomas Levet is 17 under par through 14 holes and third-round leader Angel Cabrera is 15 under par with four to go in his final round.
Havret tallied an eagle and three birdies in his first four holes after the delay but dropped a shot at 13. He chipped in for eagle at the par-5 15th to take his share of first place.
McDowell recorded four birdies on his front nine before the stoppage. He birdied the 12th then drained an 8-foot birdie putt at 14 right after the horn sounded stopping play on Sunday.
Alastair Forsyth and Martin Maritz are 14 under par, both through 16 holes.
Anders Hansen (66) and Charl Schwartzel (67) are the leaders in the clubhouse at 13-under-par 203. Ian Poulter, a two-time winner of this event, is 13 under par with two holes to play.