Police have warned supporters not to take pyrotechnics to the Dundee United v Celtic match on Friday evening.

A big crowd is expected at the game in Dundee on Friday evening and officers are asking fans to enjoy the fixture responsibly.

Supporters trying to get into Tannadice Stadium with flares or smoke bombs will be refused entry and could be arrested, while police have also been warned them against turning up with alcohol.

The warning comes days after Celtic banned three supporters over the use of pyrotechnics during their Scottish Cup clash with Stranraer, claiming their actions "caused embarrassment" to the club.

Sunday's match at Stair Park was briefly delayed due to flares and smoke bombs being thrown on to the playing surface, with players forced to wait in the tunnel.

In an interview with STV, Stranraer chairman Iain Dougan revealed he had received an apology from Celtic chief executive Peter Lawwell.

Police also made four arrests and said they were investigating "complaints of antisocial behaviour and sectarian singing".

Friday's league game kicks off at 7.45pm and those attending are asked to plan their journey in advance and arrive at the ground in plenty of time.

Police officers will be active outside the stadium to prevent any disorder or alcohol misuse and there will be stop checks carried out on supporters’ buses en route to the match.

Superintendent Tony Beveridge said: "Fans are liable to be searched before entering the ground and anyone trying to get in whilst in possession of alcohol or pyrotechnics or who is drunk will be refused entry and may be arrested."

He added: "We are looking forward to what will be an excellent fixture between the two clubs and we want both sets of supporters to enjoy the occasion in a manner that does credit to themselves and their clubs.

"Our officers will be visible in the area around the ground and elsewhere in the city and we will be working closely with club officials and stewards to ensure a safe and enjoyable occasion for everyone.

"We know the vast majority of supporters and their families will be there to enjoy a great match and will do so responsibly."