A British tourist was arrested over the death of a Thai hooker who plunged five floors to her death as they had “strange and extravagant” sex on a balcony.

Police pounced on Reece Vella, 25, at 4 p.m. local time Sunday following the death of bar girl Wannipa Janhuathon, 26, in the early hours of Saturday in Pattaya, Thailand.

The prostitute suffered severe head injuries and multiple fractures after falling naked along with a half-empty packet of sex drugs from an apartment in the notorious tourist resort.

Police searched the empty room — finding clothes and used condoms — then began a manhunt for the foreign tourist amid suspicions that he had fled following the death of the woman.

Vella, from Birmingham, England, was arrested Sunday afternoon at the nearby Route CC Roadhouse bar and was filmed producing two mobile phones from his pockets — one of which police claim was Janhuathon’s.

In footage from the arrest, the tourist — who arrived in Thailand between three and four months ago — is heard asking to be uncuffed before laughing as he says: “Can I have a cigarette now?’”

He later admitted to police that he had taken the hooker back to his rented room and “had sex in the bedroom, then on the balcony before she fell.”

He then said he was “distraught” and went to a different hotel.

Police Lt. Narong Chantra, deputy head of investigations with the Pattaya police, said Vella had been arrested on suspicion of “negligence causing others to die” and had fled the scene in a panic knowing that he was staying in the country illegally on an expired visa.

He said: “CCTV from the incident was examined and after checking evidence at the hotel, the suspect was found to be Mr. Reece Vella, a British citizen, aged 25 years.”

“An arrest warrant was issued after evidence was presented to the court. The police case is that on the day of the incident, Mr. Vella visited the bar and paid to take Miss Wannipa away.”

“Miss Wannipa and Mr. Vella were having very strange, extravagant sex on the balcony until she fell down below and died.”

“Mr. Vella was in shock and knowing that he had overstayed his visa, ran away and kept her mobile phone in his bag and left the room.”

“Mr. Vella has been arrested on suspicion of negligence causing others to die, overstaying his visa in excess of 59 days and stealing a motorcycle at night. The foreign suspect will be processed and prosecuted in accordance with the law.”

The bar girl, also known by the nickname Joy, had moved from her hometown in Sakon Nakhon province and was working at Sky Bar in the city’s bustling Soi 6 street, which is lined with hundreds of prostitutes working in bars and massage parlors.

Thai police said Vella arrived at the venue earlier in the evening before agreeing on a fee of around $45 (1,500 baht), then leaving with Janhuathon and going to a room at the nearby Cosy Beach View condominiums.

But police claim the pair had been having what translates as “fancy or extravagant” sex on the balcony before Janhuathon fell to her death. A packet of erectile dysfunction jelly was found next to her body around 5:30 a.m. local time.

Sources close to the investigation said the packet of jelly, which fell along with her body, gave them the first clue that Janhuathon had not been alone — and had actually been midway through sex when she plunged naked to the ground.

Building security guard Kriengsak Khamchachai, 23, described hearing a “loud crash” as Janhuathon hit the ground.

He then walked over and saw her body in a pool of blood before raising the alarm.

Paramedics arrived and performed CPR on Janhuathon — who was still alive — but she was later pronounced dead in the hospital.

Devastated staff at the bar, whose owner also passed away a few months ago, said Janhuathon was one of the “happiest, friendliest girls anybody could wish to meet.”

They added in a statement: “As many of you know we lost our beautiful Joy [on Saturday] morning.”

“The place will not be the same without Joy’s big cheeky smile and sense of humor.”

“She really was a very special girl and left a lasting impression on all of us. She will remain in our hearts forever.”

Vella was interviewed by Thai police Monday. The vacationer was seen in handcuffs and looking disheveled as he answered questions from Pattaya Police Chief Apichai Krobpetch.