Mexico's Supreme Court has ordered the release of a Mexican-American jailed on a homicide conviction since 1992, ruling he had been tortured.

The court's ruling Wednesday applies to the long-disputed conviction of Alfonso Martin del Campo Dodd in the murder of his brother and sister-in-law. It has been one of Mexico's longest and hardest-fought legal cases.

Lawyers for the dead couple's now-grown daughters criticized Wednesday's ruling, saying it was a blow to victims' rights.

The court said police tortured Del Campo Dodd into confessing to the killings, citing administrative proceedings filed against one officer two years after Campo Dodd was arrested.

The Mexican government fought for years to keep Del Campo Dodd in prison despite pressure from abroad to release him. He holds U.S. and Mexican citizenship.