At the time of their arrest, the self-proclaimed journalists said they had been sent to cover a high-profile murder for Televisa, Mexico's biggest TV network, but the company quickly denied any link to the group.
Family and friends have rallied around the self-proclaimed "King of Pop" since his arrest.
Two years after her arrest, she said she killed him in self-defense.
It was the latest setback for Musharraf, who returned to Pakistan last month from four years in self-imposed exile to make a political comeback but is currently under house arrest in connection with a different case.
For London-based IWPR Balkans online associate editor, Gordona Igric, the threat of arrest in her home country was real enough for her to go into self-imposed exile in Britain.
Sanford police initially declined to arrest Zimmerman, saying there was no evidence to contradict his claim of self-defense under Florida's "stand your ground" law, which allows people to use deadly force anywhere they feel a reasonable threat of serious injury or death.
The Dowlers' lawyer, Mark Lewis, who also represents other hacking victims, said self-regulation of the press had "failed abysmally", as shown by the arrest of Press Complaints Commission (PCC) member and former editor of the Sunday Mirror Tina Weaver this week.
Police had declined to arrest him that night, saying there wasn't enough evidence to refute his self-defense claim.
The shooting raised questions about race relations and sparked large protest in Sanford after police declined to arrest George Zimmerman, who said he shot 17-year-old Trayvon Martin in self-defense.
The local police did not arrest Mr Zimmerman, saying they had no evidence to dispute his claim that he had acted in self-defence.
ECONOMIST: A shooting becomes an excuse for political point-scoring
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