"This is not been being treated as a terror-related incident", the statement said.
A police spokesperson said: "The driver of the vehicle who is believed to have been asked to leave the nightclub earlier that evening following an altercation has been arrested on suspicion of attempted murder and is now in custody".
A man has been arrested on suspicion of attempted murder after he drove a auto into a nightclub in the south of England, injuring several people.
The Serious Collision Investigation Unit and detectives from the Kent and Essex Serious Crime Directorate are investigating the incident.
BBC Radio 1Xtra DJ Reece Parkinson tweeted: "A guy who didn't get let in the club just drove his auto inside and almost killed us all".
Kent Fire and Rescue Service said they had been called to assist Kent Police at an incident on Queen Street.
"Two fire engines attended". He claimed that "some guy wasn't let into the club or got kicked out so he drove his 4x4 into the tent we was all in. We left the scene at 12.50am [local time]".
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He said: 'My God I almost died. The area that the vehicle drove through leads to the crowded dance floor of the club. "I'm praying for everyone still there and trying to get home safe".
Another tweeted: "Never been so scared in my life".
Jade Keepin, 18, said: "I came out of the toilets in the shisha lounge and there was a vehicle in the middle of the floor that security had surrounded".
He explained that the Suzuki had entered a smoking area of the building and that while one of his friends' mates was injured, he was thought to be in stable condition.
'Another security guard tried to jump out of the way but he went onto the bonnet and hit the windscreen.
"It stopped at my feet so any further and I could have died, then he reversed up and we all ran".
Both people said the club was packed for the night's main act, British rapper Giggs.
A statement posted on Facebook by the club on Sunday morning said: "Although we are deeply saddened that injuries occurred, we are grateful that no one was fatally hurt".