Gary Hooper showed why he is so highly rated by manager Neil Lennon by scoring a double in Celtic's 4-1 win over Hearts at Parkhead.
Lennon confirmed on Friday that the Scottish champions had rejected an offer, reported to be about £5 million, from Norwich for the 24-year-old English striker. Hooper showed why he is attracting attention from south of the border when he slid in an Adam Matthews cross in the second minute for his 19th goal of the season.
Georgios Samaras added a second ten minutes later but after Jason Holt pulled a goal back in the 68th minute there was a nervy spell for the home side which only ended five minutes from time when Hooper grabbed a third, before substitute Lassad Nouioui, on for Matthews, grabbed a fourth in added time.
Billy McKay's double helped Inverness cruise to a 3-0 victory against Aberdeen.
Andrew Shinnie opened the scoring for the hosts nine minutes into the second half and McKay wrapped up the win with goals in the 61st and 78th minutes as Terry Butcher's men remain nine points behind Celtic in second.
Leigh Griffiths' goal earned Hibernian a 1-1 draw against Dundee.
John Baird gave the visitors - 13 points adrift at the foot of the table - an eighth-minute lead at Easter Road. However, Griffiths netted four minutes into the second half to earn Pat Fenlon's men a point.
Dundee United showed no ill effects from news of manager Peter Houston's planned departure as Johnny Russell struck a hat-trick to complete a deserved comeback in a 3-2 win at Klimarnock.
Manuel Pascali gave Kilmarnock the lead against the run of play but Russell rewarded United's first-half dominance with an excellent finish two minutes before the break. The goal originated from Keith Watson and Russell headed United in front from the same source before completing his treble two minutes from time to move his side above Kilmarnock into seventh place in the table.
Pascali headed a second goal coming in the final seconds but there was no time to push for an equaliser.
Ross County moved 12 points clear of danger at the foot of the table with an impressive 4-1 victory over St Mirren.
Richard Brittain fired the visitors ahead with an excellent 25-yard free-kick and the Highland side passed up numerous opportunities to extend their advantage during the first half.
St Mirren were rewarded for a bright start to the second half when Steven Thompson rocketed a shot past Mark Brown from just inside the area, but it was to be the highlight of the afternoon for Danny Lennon's side. Sam Morrow took advantage on a horrific defensive error by David Barron to restore County's lead and Ivan Sproule marked his debut with a goal four minutes later.
Sproule capped off an excellent display when he tapped home a fourth and a miserable day for St Mirren was completed when Lewis Guy's penalty was saved by Brown in injury time.
Information from the Press Association was used in this report