A hunt has begun after a young girl allegedly disappeared with her mother's ex-boyfriend in the middle of the night.

Police in Virginia are on the hunt for a missing 14-year-old girl who is thought to have vanished in the early hours of Monday morning with her mother's 34-year-old ex-boyfriend.

Isabel Hicks was last seen in her family home in Louisa County before she disappeared sometime after 1am on October 21, say investigators.

Officers believe her to be in the company of Bruce Lynch, a 34-year-old white male from Bumpass, who is described as being five-feet-ten-inches, with brown hair and brown eyes.

Police haven't confirmed the connection between Hicks and Lynch, however posts on social media show that Lynch was at one time dating Isabel’s mother, Cortney Lewis - between at least 2014 to 2017 - and has known the girl since she was nine-years-old.

Isabel, meanwhile, is described as a white female with blonde hair and blue eyes. She’s four-foot-eleven and weighs roughly 120 lbs.

Lynch is believed to be driving a silver blue Toyota Matrix, with a Virginia licence plate reading ‘VEM-9071.’

A picture shared by the Louis County Sheriff’s Office shows Lynch and Isabel together on what appears to be a family vacation or outing.

Police have not yet issued a warrant for Lynch’s arrest, nor have they publicly accused him of any wrongdoing.

Relatives of the missing teen have spoken out on social media, issuing desperate pleas for any information regarding her whereabouts.

Blake Saylor, Isabel’s brother said on Facebook that his sister had been ‘kidnapped’ and said the family ‘isn’t going to do anything crazy’ but will let authorities investigate the case and help being the young teen home.

Saylor added that he believes Lynch ‘deserves to rot in jail’.

Isabel’s mother, Courtney, has also posted on Facebook several times since her daughter vanished.

On Monday, 14 hours after she was reported missing, she said: ‘Please, please all hunters around us please go check your land he took camping/hunting gear so they may be in the woods.’

Lynch’s cousin, Matthew Lynch, told DailyMail.com he hasn’t seen Bruce since 2016 but says the 34-year-old doesn’t have any sort of criminal past which he knows of.

‘He's always been very mild nature and very kind that I know,’ Matthew said. ‘I tried to reach out to him after I was sent some information [about the disappearance] but he never opened nor responded to my message.’

Matthew said Lynch appeared to be online less than an hour before he sent the message at 12.50pm Monday, but he hasn’t been online since.

‘So my thought is I hope it's just a misunderstanding,’ he continued.