Aristocrat Constance Marten, 35, and Mark Gordon, 48, were arrested on Tuesday on suspicion of gross negligence manslaughter in the United Kingdom for child neglect after the pair went missing with their newborn baby in early January.

The child is still missing and the search for the infant is currently ongoing.

Marten and Gordon abandoned their burning car on a highway in the northwestern town of Bolton, England, and left with their baby. Most of their belongings were destroyed in the fire, according to police, who launched a missing persons investigation. Before they were arrested, there were confirmed sightings of the couple by members of the public.

Who is Mark Gordon?

Mark Gordon was born in Birmingham. He moved with his mother and half-siblings to Florida when he was young. He was 13 years older than Constance. At the age of 15 in 1990, Gordon was found guilty of kidnap and sexual battery. He spent 20 years in jail and was recorded as deported in 2010.

According to court records, Gordon broke in through the woman’s bathroom window and found a pair of her stockings. He then used it as a makeshift mask to cover his face.

After encountering his victim, “The suspect ordered the victim back into the bedroom and while still armed, demanded that the victim undress.” He then allegedly sexually assaulted and raped the victim.

“The suspect placed a nylon stocking over his face to conceal his identity since he lived next door and was known by her. The suspect was armed with a kitchen knife as well as a pair of hedge clippers and after the victim came out of her bedroom to investigate the dogs barking, came across the suspect lurking just outside her bedroom door. The victim was held for a period of approximately four-and-a-half hours against her will by the armed intruder. After miranda [being given the right to remain silent], the suspect admitted to the crime and gave a sworn, taped statement outlining the sequence of events as they occurred. It should be noted that during the commission of the crime, the victim’s two small children were sleeping in their bedroom,” the record read.

It is unclear how Gordon met Marten met. However, the couple reportedly moved into a small, terraced house in Ilford, East London. The couple was “mysterious”, a neighbor said. Marten’s father, aristocrat Napier Marten, a film and music producer said that after meeting Gordon, Constance became estranged from her family and friends.