Kozlovskis said in a Tuesday interview with Latvian Television's morning news that the police have found out all of the crimes in which the 20-year-old man was involved.
"His case has been given to the prosecution, while another proceedings have been initiated over two more sexual assaults on underage girls," Kozlovskis said.
"I think he could face the most severe punishment - up to a life sentence," the minister told Latvian Television.
The man believed to be responsible for a string of sex attacks on young girls in and around the Imanta suburb of the Latvian capital, Rīga, was arrested in August 2015 after a year-long manhunt.
Artist's impressions of the suspect appeared throughout the capital so that the 'Imanta paedophile' gained almost mythical status as a symbol of fear and depravity.