The Peruvian magazine Panorama alleges that van der Sloot stabbed three prisoners, with at least one victim needing emergency medical care. The magazine also reports that the Dutchman is a heavy drug user who has "been put into solitary confinement several times but comes out even more angry," a source told Panorama.
He is also a longtime suspect in Holloway's 2005 disappearance in Aruba. He has been in police custody since June, accused of the May 30 slaying of Stephany Flores, a Peruvian business student who was found dead in van der Sloot's hotel room in Lima on June 2.
The Dutch native's lawyer, Maximo Altez, has not publicly addressed the latest allegations. Panorama reported that he has not denied his client was involved.
Meanwhile, Lifetime Television plans to premier the original movie "Justice for Natalee Holloway" on May 9. The latest film is a follow-up to the Lifetime Movie Network original "Natalee Holloway," which premiered last year. This most recent installment will focus on the ongoing mystery of what happened to the Alabama teen, as well as van der Sloot's alleged extortion of her mother and his arrest in Peru.
The film will be followed by a sneak peek of Lifetime's new true-life series "Vanished With Beth Holloway." The one-hour program, which will begin airing in its regularly scheduled time period on May 11, explores firsthand real-life mysteries of families who have been victimized by unsolved abductions, disappearances and unspeakable crimes.
According to Lifetime, Beth Holloway, Natalee's mother, will offer "a uniquely empathetic point of view to the loved ones that have been left behind."