MacColl is remembered for hits including Fairytale of New York
The campaign seeking justice over the death of singer Kirsty MacColl is to cease its work, it has been announced.
Activists said they had made the move after the Mexican authorities announced the case had closed and all lines of inquiry had been exhausted.
The committee said it had achieved its aims and raised funds for MacColl's mother to pay lawyers' fees.
MacColl died in 2000 at the age of 41 after being hit by a speedboat while on holiday in Cozumel, Mexico.
In a statement, the Justice For Kirsty campaign said once the case was closed they had nothing to fight for.
"We are not able to bring any more pressure on the Mexicans than we have achieved already," it added.
Speedboat deckhand Juan Jose Cem Yam was found guilty of culpable homicide in 2003, fined £61 and ordered to pay damages to MacColl's two sons, who witnessed the accident.
Justice For Kirsty was instrumental in forcing the Mexican inquiry to reopen in 2004.
MacColl's mother Jean Newlove will continue to work in a personal capacity to raise awareness of the key aims of the campaign, said the statement.
She said she wanted to thank everyone for their efforts, including The Pogues and singer Billy Bragg.
MacColl is best remembered for her Christmas hit with The Pogues, Fairytale Of New York.
She also worked with Manchester band the Happy Mondays and had solo hits including They Don't Know, There's a Guy Works Down the Chip Shop Swears He's Elvis and a cover of Bragg's A New England.
Two charities in Latin America will receive the remaining funds from the campaign.