Sandy Hook gunman had not taken drugs or alcohol

Toxicology tests on the body of the man who killed 26 people at a US school have found he had not taken any alcohol, illegal drugs or prescription medications prior to the shootings, an official close to the investigation yesterday revealed.

Adam Lanza killed 26 people in the school last December. Picture: AP

Adam Lanza, 20, fatally shot 20 children and six staff at Sandy Hook Elementary School in Newtown, Connecticut, on 14 December last year before killing himself. He had killed his mother at their nearby home before going to the school.

The official said the toxicology tests were completed about five weeks ago and the results sent to Danbury State’s attorney Stephen Sedensky III, who is leading the investigation.

The test results, which were first reported by the Hartford Courant last week, leave many questions unanswered.

Search warrants revealed that Lanza lived in a home surrounded by an arsenal of weapons, but authorities haven’t revealed if he had been prescribed medications or whether he was diagnosed with any disorder that could help explain his actions.

A state investigation report on the killings is expected to be publicly released this summer.