Hundreds of protesters marched in Haiti's capital on Friday to demand justice following the brutal killings of three deaf women who were tortured, stoned and left in a gully by attackers.

Mickelson Jean, leader of a Haitian association for the deaf, was one of roughly 300 people who marched in Port-au-Prince to call attention to the recent slayings. The women lived in the coastal village of Leveque where scores of homes are reserved for deaf people and their families.

"These murders are an act of absolute barbarism and we must have justice," Jean said.

The three women were killed as they were trying to return home by foot late at night because a bridge had collapsed, preventing public transport from Haiti's capital. They all worked as street vendors and went into Port-au-Prince that day to stock up on supplies.

Jentullon Joel, the police commissioner in Cabaret, a community near where the killings took place two weeks ago, said arrest warrants have since been issued for two men and three women are currently being held for questioning.

Joel said that one of the female suspects told investigators that her husband killed the deaf women because he feared they were "lougawou," a Haitian Creole word for vicious supernatural creatures who fly at night.

But Nicole Phillips, a lawyer representing the victims' families, believes that story is "a false defense to try and justify a heinous crime." There's no shortage of Haitians who believe that summary execution of perceived evil-doers is acceptable.

She alleged that that one of the victims was known by members of the family who attacked the deaf women. "They only came to this house late at night and asked for shelter because one of the victims knew them," she said.

Phillips, an attorney with the Institute for Justice and Democracy in Haiti, is hopeful that the case can shine a spotlight on the vulnerability of disabled Haitians and the obstacles to justice they face.

"It's a case that's emblematic of violence that occurs against deaf people, particularly women who can't scream if they are attacked," she said.

In a statement, Secretary of State Gerald Oriol sent condolences to the victims' friends and families and called for a "more civilized society."

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David McFadden on Twitter: www.twitter.com/dmcfadd