Aruban and Peruvian authorities have agreed to "help each other" in the murder investigation of Stephany Flores - in which Joran Van der Sloot is the prime suspect, Aruban government spokesman Taco Stein told CNN Tuesday.
Investigators hope the cooperation will lead to new information about the disappearance of Alabama teenager Natalee Holloway in 2005 in Aruba. Van der Sloot is also a suspect in that case.
Following a phone meeting with Peruvian judge Carlos Morales on Tuesday morning, Stein said Peruvian authorities have agreed to allow Aruban investigators into Peru once a formal request has been made. He did not indicate when that more formal request would take place or when Aruban investigators are expected to arrive in Peru, but described the meeting as a "positive start" to information sharing.
On Monday, van der Sloot, who is in the Miguel Castro Castro prison in Lima, was awaiting a psychological evaluation, prison authorities said. He is in a high-security area of the prison where only two of 10 cells are occupied, and he has no contact with inmates in the general prison population. He is under guard 24 hours a day, authorities said.Â The only other inmate in the area is alleged Colombian hit man Hugo Trujillo Ospina.
The two have spent some time together in a common area where there is a television set and weights made of out of broomsticks and soda bottles, authorities said.
According to transcripts of his confession, van der Sloot said he elbowed Flores in the face before strangling her and then suffocating her with his own shirt.
- CNN's David Ariosto contributed to this report.