Gary Hooper grabbed a double as Celtic strengthened their grasp on top spot in the Clydesdale Bank Premier League with a 3-0 win over Rangers.
Kris Commons was also on target once again in the Old Firm derby as the Hoops moved eight points clear at the summit.
Celtic took the lead after 17 minutes when Commons supplied the pass for Hooper and he beat David Weir for pace before rifling past Allan McGregor.
Celtic increased their lead after 28 minutes when Hooper claimed his second of the day. Georgios Samaras started the move by releasing Emilio Izaguirre out on the left and he whipped a great ball to the feet of Hooper to stab home.
There was no way back for the Scottish champions when Celtic netted their third after 70 minutes. Hooper had been impressive and turned provider for Commons who sent a swerving effort past McGregor into the back of the net.
The victory puts them beyond the reach of Rangers for now, regardless of the outcome of their two games in hand.