Speedboat killer Jack Shepherd has been arrested in Georgia after handing himself in to authorities after spending months as a fugitive.
He went on the run pending his Old Bailey trial over the death of 24-year-old Charlotte Brown, and was convicted in his absence in July last year.
Georgia's embassy in London said he surrendered himself to police on Wednesday, after her family increased their calls for him to return to face justice.
Her father, Graham Brown, celebrated the move, writing on Facebook: "Justice for Charlotte is close!"
Ms Brown, from Clacton-on-Sea, Essex, died in December 2015 when 31-year-old Shepherd's boat flipped into the wintry waters of the River Thames in London.
The pair had been on a Champagne-fuelled first date.
Shepherd, originally from Exeter, was sentenced in his absence to six years in prison for manslaughter by gross negligence.
A spokesman for the Georgian embassy said: "He has just surrendered himself to the Georgian Police and now the police undertakes relevant detaining formalities."
Charlotte Brown who died after a speedboat crash. Image: Metropolitan Police/PA Wire.
The family of Ms Brown, known to loved ones as Charli, ramped up pressure in recent weeks and met with Home Secretary Sajid Javid on Tuesday.
The National Crime Agency confirmed Shepherd was in custody.
Scotland Yard, the force leading the investigation, said officers had been updated by the NCA on the development and are awaiting confirmation of his identity.
But, the Metropolitan Police added that once identity was secured extradition proceedings "will begin immediately" against Shepherd, who was wanted on an international arrest warrant.