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CLUBBERS were warned about a batch of rogue drugs yesterday after nine people were taken to hospital.

Seven men and two women suffered fever, agitation and seizures after taking a pill or powder in the early hours.

Four were rushed to Glasgow Royal ­Infirmary by ambulance from The Arches nightclub.

The other victims went to hospital of their own accord.

Police were last night using sniffer dogs as they warned revellers about the dangerous drugs.

Superintendent Kirk Kinnell said: “The worry is there could be more out there and there could be more people affected that we don’t know about.

“We want to track the ­people responsible for selling these drugs and we are asking the public to help give us information.

“CCTV footage is being reviewed and we will do ­everything in our power to arrest those who are concerned in the supply of these drugs.”

The Arches, in Midland Street, hosted a sellout show by Dutch DJ Laidback Luke on Friday night.

Its bar and arts venue are normally open during the day but the venue was closed and guarded by police yesterday.

It opened in time for a night ­starring David Hughes Dance and Simian Mobile Disco.

An Arches spokesman said: “The Arches was closed to enable us to co-operate fully with a police investigation, following an incident in the city centre last night.”

The victims were aged between 17 and 22. Seven were allowed home and two were expected to be released last night.

It is not known what type of drug they took, and whether they were a so-called legal high.

Supt Kinnell said: “The results of toxicology reports can take anything from two days up to six weeks and we do not know which specific drug which has been taken yet.

“Our understanding is that for the most part those people involved have admitted taking either pills or powder, and it’s on the back of that that we issue a warning relating to the use of illicit drugs.

“We do not know where the drugs were purchased but we are aware of where the ­individuals were and we are focusing on those pubs and clubs.”

Last month, police issued a warning about a legal high called Annihilation after nine people were ­hospitalised in three months.

We told in September how mum-of-three Jackie Jarvis, 38, died after a suspected overdose of a so-called legal high in Glenrothes, Fife.

NHS Greater Glasgow and Clyde public health ­consultant Anne Scoular said yesterday: “Ingesting club drugs is always risky as you can never quite be sure what you are taking.

“The result can be very unpredictable, especially when combined with ­alcohol. Symptoms include hallucinations, severe agitation and aggression, high heart rate and seizures.

“This situation saw some quite heightened symptoms among a number of people which we would not normally see.

“While we urge people not to take these drugs, if you do and you or your friends show signs of the symptoms, I would urge you to seek medical advice immediately.”