A THUG who caused havoc in a Tesco after staff refused to sell him alcohol was jailed for 16 months.

Andrew Roberts, 38, confronted the workers at the store’s branch in Glasgow’s High Street in April this year.

He was later snared with a knife on a bus in the city’s Duke Street.

Roberts pleaded guilty on Thursday at Glasgow Sheriff Court to the possession of a knife in a public place, acting in a threatening or abusive manner.

The court heard Roberts tried to buy drink around 10pm but was refused by staff.

He became “confrontational” and ran in and out the shop for 20 minutes with a number of goods.

Roberts was told to leave and refused before shouting and swearing at staff.

He said: “Come outside I will do you, I will

rip your face off.”

Roberts, of the city’s Gallowgate, eventually left before being caught with a knife on a bus after midnight.

Prosecutor Mark Allan told the court: “A Stanley knife with a locking mechanism was found in his jacket pocket.”

Gerry O’Donnell, defending, said Roberts couldn’t understand why he buy alcohol and accepted his behaviour was “unacceptable.”

Sheriff Paul Crozier said: “There is no other way to deal with you other than a custodial sentence.”