Joran van der Sloot arrived Saturday at criminal police headquarters in a brown Interpol SUV and was escorted across an auditorium crowded with shouting, shutter-snapping journalists three times.
Wearing a green bulletproof vest, his hands handcuffed behind him, the husky 22-year-old stared straight ahead and didn't respond to reporters' questions or make eye contact.
Outside, seven Indian shamans in brightly colored ponchos repeatedly stabbed a cloth doll representing van der Sloot in a "spiritual punishment" ritual. "We're punishing him so that all the forces of evil are purged," one shouted.
About an hour earlier, onlookers yelled insults at the man who has dominated Peruvian front pages as police switched cars south of the foggy coastal capital.
His interrogation began almost immediately, Gen. Cesar Guardia, chief of Peru's criminal police, told The Associated Press. His spokesman, Abel Gamarra, said later that van der Sloot would be kept overnight at the headquarters of the criminal police.
Van der Sloot is suspected of killing 21-year-old Stephany Flores on May 30 at his hotel room in the Peruvian capital.
Police in neighboring Chile caught van der Sloot on Thursday and expelled him across the border a day later. He was then driven 17 hours north in a police caravan.
Chilean police spokesman Fernando Ovalle said the Dutchman told them he did not kill Flores, who was found battered with a broken neck.
But van der Sloot did acknowledge that "he met her and at some point they went to a casino," Ovalle said.
Police released video Saturday taken by hotel security cameras showing van der Sloot and his alleged victim entering his hotel room together.
Flores trails van der Sloot, her head bowed, after he is given his room key. She exhibits the same demeanor when she follows him into the room.
Van der Sloot is wearing a white, long-sleeved button-down shirt and jeans in the video. Flores wears a dark sleeveless T-shirt and jeans and has her hair up.
Later video shows the Dutchman leaving the hotel alone with his bags. He is in a patterned shirt and carries a day pack on his back and a gym bag in his hand.
Guardia, the police chief, said that at 8:10 a.m., nearly an hour and a half before leaving the hotel, van der Sloot walked across the street alone, bought bread and two cups of coffee at a supermarket and returned to his hotel room.
Peru's interior minister, Octavio Salazar, reminded reporters that the murder investigation was not over: "We can't rush the matter, nor can we give details concerning the event or that investigation itself," he told a brief news conference.
"In two weeks we'll know if the girl had sexual relations or if there is alcohol in her blood," Dr. Cesar Tejada, the deputy Lima medical examiner, told The Associated Press in an interview. He said toxicological reports should also be able to tell whether she was given a so-called "date rape" drug. Flores' father, Ricardo, told The Associated Press he believes van der Sloot drugged his daughter.
The girl's father told the AP that video cameras had also tracked the couple as they walked before dawn Sunday to van der Sloot's hotel from a casino in Lima's upscale Miraflores district where the two met playing poker.
She had dropped two girlfriends off at their homes several hours earlier. El Comercio, citing a police report, said she sent a text message to one to tell her she was "walking up the stairs to my bedroom."
Guardia said he could not confirm that report.
Flores, a 48-year-old circus promoter and former race car driver, said he doesn't want the death penalty for van der Sloot, only justice. In Peru, murder carries a prison sentence of up to 35 years.
Van der Sloot remains the prime suspect in the May, 30, 2005 disappearance of Alabama teen Holloway on the Dutch island of Aruba. He was arrested and released in that case, and faces no charges.
Flores told the AP in an interview at his home that the loss of his daughter may ensure that van der Sloot is punished for that death.
"My daughter was an instrument for this girl (Holloway), so that there can be justice," he said. "He's going to have to talk now."
Van der Sloot also now faces criminal charges in the United States of trying to extort $250,000 from Holloway's family in exchange for disclosing the location of Holloway's body and describing how she died.
U.S. prosecutors charged van der Sloot with the crime on Thursday, saying $15,000 was transferred to a Dutch bank account in his name. In the Netherlands on Friday, prosecutors acting on a U.S. request raided two homes seeking evidence in the case, seizing computers, cell phones and data-storage devices.
Peruvian President Alan Garcia told reporters on Friday that van der Sloot would have to be tried in Stephany Flores' death before any extradition request could be considered.
A college business student less than a year from graduation, Flores was found late Tuesday in the Lima hotel room where van der Sloot had been staying since arriving in Peru on May 14 from Colombia.
She was fully clothed, with multiple bruises and scratches on her body but no signs she had been sexually assaulted, Guardia told the AP.
A tennis racket was found in the room "that could have been the murder weapon but that's so far not been proven," said Tejada.
"My daughter resisted," Flores told the AP. "Under the fingernails of my daughter there are traces, evidence. That's why they didn't permit her cremation." Flores said he expected her to be exhumed for DNA testing, and Tejada said that was likely.
Holloway's uncle, Paul Reynolds, told NBC's "Today" show Friday that the family hopes to see van der Sloot behind bars and the Aruba case reopened.
Holloway, 18, was celebrating her high school graduation on Aruba when she disappeared. Van der Sloot told investigators he left her on a beach, drunk. That's the last anyone saw of her. Van der Sloot was twice arrested in her disappearance -- and twice released for insufficient evidence.
Two years ago, a Dutch television crime reporter captured hidden-camera footage of van der Sloot saying that after Holloway collapsed on the beach he asked a friend to dump her body in the sea. But judges in Aruba ruled it insufficient to re-arrest him. The same journalist, Peter de Vries, reported later in 2008 that van der Sloot was recruiting Thai women in Bangkok for sex work in the Netherlands.