CELTIC goalie Craig Gordon and his girlfriend Summer Harl have got caught up in protests at Barcelona Airport.

The footballer, 36, was on holiday in the Spanish city with former Celtic TV star Summer, 30, when violence erupted over the conviction of separatist leaders.

Summer, who blogs about her life, told her 8,000 plus followers that she missed her flight home to Edinburgh following the protests at the city airport.

It came after Spain’s Supreme Court convicted 12 separatist leaders of illegally promoting the Catalonia region’s independence and sentenced nine to prison.

Police fired foam bullets and used batons against thousands of protesters who converged on Josep Tarradellas Barcelona-El Prat Airport after a pro-independence group put out the call.

Protesters fought back by throwing objects, spraying fire extinguishers and breaking windows.

Regional emergency service SEM said 75 people were treated for injuries at the airport. Spain’s airport operator, AENA, said at least 108 flights were cancelled.

READ MORE: Craig Gordon's girlfriend Summer Harl reveals post Celtic career after quitting club

Glasgow Times:

Summer took to Instagram to say: "We have been caught up in the protests in Barcelona since 3 pm.

"Missed our flight home.

"There was no way of getting to the airport.

"But we have finally made it and now a flight would be great."

READ MORE: Celtic star Craig Gordon trolls girlfriend Summer Harl with throwback 'Ugly Betty' picture

Glasgow Times:

She added that she had to walk between terminals to get another flight to Glasgow. The couple also had to get a taxi from Glasgow Airport to Edinburgh Airport where they were meant to fly into to pick up their car.

Summer, who posted a sultry selfie of herself in Barcelona, said: "Home. Got lucky. So many people are stranded. Thinking of them and anyone affected. Some protests were peaceful, some weren't. I hope everyone is safe and well."

Police also clashed with angry crowds late on Monday in central Barcelona. They used batons, and sounds similar to the firing projectiles were heard.

Nine of the 12 Catalan politicians and activists were found guilty of sedition and given prison sentences of nine to 13 years. Four were additionally convicted of misuse of public funds.

The other three were fined for disobedience. The court barred all of them from holding public office.

All 12 were acquitted on the more serious charge of rebellion, which implied the use of violence, brought by state prosecutors and lawyers for the far-right Spanish party Vox.