Various parts feared to be of Lin’s corpse have been found — his torso in a suitcase near Magnotta’s home, and hands and feet sent to Canadian politicians and two schools. Police believe Magnotta may have eaten some body parts.
The head has not yet been found, fueling speculation it is still in the mail.
Some have linked the killing to the 1995 movie Se7en in which Pitt and Morgan Freeman play two detectives hunting a serial killer who uses the seven deadly sins as his modus operandi.
The film ends with the grisly discovery of a head in a cardboard box.
In the real-life case of the decapitated head found near the Hollywood sign, Los Angeles police are said to be cooperating with their Canadian colleagues in investigating whether Magnotta could have been involved.
In Montreal, Lafreniere said police were tracing Magnotta’s movements at the time.
“We know that our suspect [Magnotta] was someone who traveled a lot. We are trying to retrace his route, see where he went. It’s not easy,” he said.