Police have issued a reminder about prohibited items at this year's TRNSMT festival as fans get ready for a second day of music.

Thousands flocked to Glasgow Green yesterday to see headline act Stormzy take to the main stage, as well as stellar performances by Gerry Cinnamon and Years & Years.

But cops are warning those headed to today's gig to double-check their belongings - and make sure they are not bringing banned items with them.

It comes after 17 music-lovers were turned away at the gates after being found with drugs on their person, and a further 13 people were arrested for minor offences.

READ MORE: Everything you need to know about day two of TRNSMT 2019

And some people in the crowds gathered for the evening performance by Gerry Cinnamon were spotted setting off flares - causing the artist himself to call them out.

Flares and smoke devices are among the list of prohibited items issued by organisers, and they say CCTV footage will be used to catch those using them.

Superintendent Simon Jeacocke said: “This has been an extremely positive event so far and festival-goers have been in great spirits.

“We’ve arrested 13 people for minor offences since opening on Friday and because of positive police searches at the gates, and on-site partnership working with event organisers, we’ve detected and deterred 17 people from entering the site with drugs.

“Our message is: know what you can and cannot bring on-site. Drugs, smoke devices and flares are illegal and you will be arrested if we find them on your possession.

"Stay safe and don't take the risk.”

Other banned items include chairs, professional cameras, drugs, glass or metal/hard plastic bottles, smoke canisters, flags, selfie sticks, umbrellas, weapons, frisbees and boomerangs.

READ MORE: TRNSMT festival-goers set off flares during Gerry Cinnamon’s set

Fans are today travelling to see performances from the likes of Fontaines DC, Jade Bird, The Hunna, Sam Fender, Sigrid, Bastille and headliners Catfish & The Bottlemen.

It is set to be another day of sun, and organisers are urging attendees to look after themselves.

Empty 500ml bottles are allowed on-site and can be topped up via the taps - although glass and hard plastic or metal drinks containers will be turned away.

Festival Event Manager, Colin Roger said: “The weather, audience and performances yesterday saw TRNSMT get off to a flying start and the line-up today will be packed with huge singalong moments, exciting new talent and established stars – including our Saturday headliners Catfish & The Bottlemen.

“There’s also been excellent partnership working between organisers and Police Scotland to make sure the gate searches are strong and there’s zero tolerance towards anyone trying to enter with illegal or prohibited items."

We have all the latest news and reaction from the first day of TRNSMT Festival: Stormzy has gifted an injured fan with free tickets and a selfie, after being taken to the festival with a police escort.

We spotted Kieran Tierney, Joey Essex and former Celtic star Simon Donnelly at the fest - can you spot yourself in our gallery?