Witnesses say Wang has a history of drug abuse. He was convicted of drug-related offenses in 2006.
The suspect has also resorted to a mental care hospital for treatments so it appears his killing of the girl was a random attack from a mentally unstable man.
Taiwanese were outraged at the killing as crowds took to the streets in protest. The mob surrounded the killer while he was being led into a police station. Some rained bloody punches on him.
As a security measure, schools were on red alert on Tuesday and police officers were dispatched to a school the assailant was believed to have been headed to when he came across the girl.
The killing was the latest in a string of random attacks on the island and the third against children in the past four years.
Further heightening fears, on Tuesday, a police officer was stabbed in the head by a 28-year-old man after he approached the man to ask him why he was at a train platform with a steak knife. The officer’s injuries were non life-threatening.
Supporters are asking for capital punishment arguing that life sentences are not sufficient to prevent such acts in the future.
Lawmakers are due to review a bill tomorrow, Thursday March, 31.
The said bill would ensure that those convicted of killing children under 12-years old are given the death penalty.