The American tourist suspected of decapitating his date then putting her severed head in a bag and the rest of her body scattered in woods during a vacation in Japan is a former US airmen and 'mama's boy' from Long Island, it has been revealed.

Yevgeniy Vasilievich Bayraktar, 26, remains in custody in Osaka, Japan, after allegedly murdering Saki Kondo then mutilating her body at his vacation rental.

Bayraktar was on vacation in Japan and was believed to have been alone.

He met Kondo on a dating app, either Tinder or Matchapp, according to Tokyo Sports.

She was last seen on February 15 and was seen entering Bayraktar's rented apartment with him on surveillance cameras. Kondo, 27, never emerged again but he was seen exiting the rental with several bags.

He was arrested on February 22 in a different rental after she was reported missing. Police found the woman's head in a bag in a short-term lodging room in Osaka.

Afterwards, he led police to her severed torso and the rest of her body which he had scattered in the woods in Shimamoto, 25 miles away.

US tourist Yevgeniy Vasilievich Bayraktar, 26, (left in a school photograph) is accused of murdering Saki Kondo, 27, (pictured right in an image circulated by the Tokyo Reporter in Japan then decapitating her and severing her limbs in February after they met online and had a date

Bayraktar lives in Long Island ordinarily and grew up in the US after moving when he was nine with his mother Regina when she married a Texan she had met online.

That man told The New York Post this week that Bayraktar was spoiled by his 'selfish' mother who abandoned her husband after he brought her and her son into the country and financed her nursing studies.

'He was a mama's boy. If we were having dinner and he didn’t like the food, his mother would get up in the middle of the meal to cook him something special, and this was at a time when we didn’t have a lot of money,' Benny Dacy, Bayraktar's former stepfather, said.

'He and his mother were very close. He and I were not,' Dacy said.

Bayraktar briefly served in the Air Force before being discharged in 2012. It is not known why he was left but he was there for just 11 months.

He lives in Long Island in Mastic Beach with his mother and her third husband.

Their home is quaint and is adorned with several US flags outside.

Bayraktar is seen hiding his face as he leads Japanese officials out of jail to take them to the rest of the woman's body on February 26

The 26-year-old lives in Mastic Beach in Long Island in this home with his mother Regina and her third husband

On February 15, he was last seen with Kondo on surveillance footage entering the vacation rental in Osaka

Bayraktar was filmed leaving the apartment afterwards with bags but Kondo was not seen again

This is the vacation rental in Osaka, Japan, where the woman's head was found in a bag. He was arrested elsewhere in a different rental which is where he is thought to have spent time with the woman

Regina works as a nurse in the Hamptons.

According to her first American husband, she and Yevgeniy were living modestly in Odessa, Russia, when he met her online.

He traveled there to meet her in person then brought the pair to the US to live with him in Texas.

They spent several years together while she studied to become a nurse but once she received her qualifications she and her son disappeared, he said.

'She called once to ask me for a divorce but I had no idea where they were until the news hit.

'It was the most traumatic time of my life when she just left me. She is a very selfish woman,' he said.

According to Japanese officials cited by The Japan Times, Bayraktar had met several Japanese women online and taken them to various vacation rentals around Japan before he met Kondo.

All of those women are safe.