process,  Michael Townsend, the special agent in charge of the Secret Service's Miami field office, said in a statement.

A spokesman for Kappa Alpha Psi did not immediately return a phone message left at the fraternity's Philadelphia headquarters.

Arrest warrant describes bloody paddling, emergency medical care

According to Pinder's arrest warrant, the graduate student told police that he and another young man had their backsides beaten by Pinder and the other defendants during four nights in early April at an apartment and a home off-campus. The paddling started when the victims failed to correctly answer questions about the fraternity and its history, a police investigator said in an arrest warrant filed in court.

The warrant did not name either victim.

The beatings stopped on the fourth night when one of the victims had blood seeping through the seat of his pants, according to the warrant. It said fraternity leaders ordered both victims to strip off their clothes and place them in garbage bags before going home.

One of the victims suffered vomiting, fevers and intense pain before being admitted to a hospital, where he required skin grafts on his buttocks and treatment for kidney damage, according to police.

Without emergency medical treatment, the warrant said,  his injuries would have resulted in renal failure leading to death. 

The second victim told police he knew the other victim from the fraternity. He denied being paddled, the warrant said, but acknowledged receiving emergency medical care in April.

That person's medical records showed he had been hospitalized with injuries to his backside and  was intubated during his stay in the hospital to prevent further physical deterioration and death,  the arrest warrant said.

Florida lawmakers in 2005 made hazing a felony punishable by up to five years in prison if it results in serious injury or death. The law was spurred by the 2001 death of Chad Meredith, a University of Miami freshman who drowned after drinking alcohol and then attempting to swim across a lake at the urging of campus fraternity leaders.

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Bynum reported from Savannah, Georgia.