Liam Payne investigators say they are trying to reconstruct the star's final hours

Officials investigating the death of Liam Payne in Argentina said Tuesday they are trying to reconstruct the former "One Direction" star's final hours as experts scour cell phones, computers, photographs and videos from security cameras.

Payne's father, Geoff Payne, has been updated about the investigation by the head of Argentina's National Criminal and Correctional Prosecutor's Office, according to a news release. Geoff Payne has been in Argentina since the weekend, when he visited the hotel where Payne fell to his death. 

The prosecutor's office told Geoff Payne that toxicology reports are still pending. Another study to see if Payne was ill at the time of his death is also being conducted. Those tests, done as part of Payne's autopsy, must be completed before the singer's body can be released, officials said.