Lebanese Mohammed Jaber said he went to Iraq on a pilgrimage to Muslim holy sites, he ended up being "tortured" with loud rap music by US troops suspicious he might be a foreign fighter against Americans.
Jaber said an Iraqi taxi driver handed him and three friends over to US troops for $100 each in April apiece as fighters for ousted president Saddam Hussain.
"They asked us why we were there and if we came to fight them. But we said we came only to visit the holy sites in Karbala," he said. "They didn't torture us physically but they did psychologically by raising the volume of rap music all day until it became unbearable and by withholding food," he said.
But Jaber said he kept one secret from his captors, fearing the treatment could get worse. "I mean I like rap, just imagine them playing jazz."
US-led forces in Iraq freed Jaber and sent him and seven other Arab detainees home on Saturday.
The International Co-mmittee of the Red Cross said three of them were seriously injured while in US custody. Jaber said they had stepped on land mines while clearing up rubbish in a field for US soldiers.
Rights watchdog Amnesty International has said it has heard complaints of torture and degrading treatment including prolonged sle-ep deprivation from detainees held by the American troops.
Jaber said he and his friends were first held for six days handcuffed and hooded. They were not given food or allowed to sleep.
