The father of the worst rapist in British history said that his son deserves the punishment for his crimes.
Reynhard Sinaga was found guilty of 159 sexual offenses against 48 men.
He picked up his victims outside clubs in Manchester and lured them to his flat, where he drugged and assaulted them while filming the attacks, BBC reports.
On Monday, a judge jailed Sinaga for life, with a minimum term of 30 years.
Speaking for the first time since his son was jailed, his father Saibun Sinaga told BBC Indonesian over the phone: "We accept the verdict. His punishment fits his crimes. I don't want to discuss the case any further."
"He was very social, friendly, easy to get along with and fun to work on projects with," one of his friends, who wished not to be named, said.
She lost contact with him when he went abroad to continue his studies in the UK in 2007.