Four people were killed and more than 100 people were injured Tuesday when 33-year-old Nordine Amrani began shooting shoppers at a busy downtown square in the town of Liege. He also threw several grenades into a bus shelter.
Police searching Amrani's apartment found the body of a cleaning woman.
Amrani died in the attack in an apparent suicide. Two male teenage students, 15 and 17 years old, also died in the attack, while an 18-month-old toddler died Tuesday evening in a hospital, Liege police said.
Several of the wounded victims were still in intensive care on Wednesday.
Officials still don't know the motive for the attack.
The Associated Press contributed to this report.