Old Firm game: Nine held as police target disorder
Nine people were arrested at the Rangers-Celtic game as extra police have been deployed to prevent disorder surrounding the Old Firm clash.
Rangers and Celtic drew 0-0 at Glasgow's Ibrox stadium, with both sides chasing the SPL title.
Strathclyde Police are concerned about rising sectarian tensions after a parcel bomb was sent to Celtic boss Neil Lennon.
None of the arrests at the stadium was for sectarian-related offences.
Police said figures on any incidents following the clash would not emerge until Monday or possibly Tuesday.
The force has warned that arrests and violence tend to increase around the fixture.
Chief Constable Stephen House said 1,000 extra officers would be out across the force area on Sunday to guard against a "perfect storm" of the game, alcohol and a bank holiday.
Of the nine people detained at the match, six were arrested inside the ground and three immediately outside. They were held for minor offences including breach of the peace.
The game kicked off at 1230 BST and ended a 0-0 draw. Celtic had a chance to secure victory with a penalty but Allan McGregor saved from Georgios Samaras's spot kick.
Meanwhile, detectives are continuing their hunt for whoever sent parcel bombs to Celtic manager Neil Lennon, Paul McBride QC and former MSP Trish Godman.
Officers appealed for information about a couple in their early 20s who were seen in the Ayrshire town of Kilwinning, on the day the most recent explosive device was found in a postbox there.
The couple were seen getting on a number 20 bus in Montgomerie Terrace at about 1410 BST on 15 April.
The man was wearing a light blue and white top and the woman had a dark padded jacket. Detectives would like to hear from anyone who saw them.
Det Chief Supt John Mitchell said: "Although we have had good support from the public throughout this investigation, I am in no doubt that there are still people out there with vital information regarding this crime who, for whatever reason, have still not come forward to police.
Two men were arrested and charged with sectarian breach of the peace on Saturday in an operation targeting abusive internet sites and dozens of others are being investigated.
The arrests were made in Paisley and Dalmarnock in the east end of Glasgow. The men are expected to appear at Glasgow Sheriff Court on Tuesday.