Toronto police have confirmed that a third person has died following an apartment fire near Dovercourt Road and Dupont Street early Friday morning.

Police say a 21-year-old woman succumbed to her injuries in hospital on Saturday.

Two people were killed Friday after a fire engulfed their second-floor apartment shortly after 3 a.m.

A man in his 20s was pronounced dead at the scene, while another woman died in hospital.

A fourth person was also pulled from the blaze and remains in critical condition.

Police identified the victims Saturday as Katie Charron, 21; Jordan Boyer, 22; and Alysia Graham, 21.

The cause of the fire is under investigation.

Fire officials are trying to determine if there were working smoke alarms in the apartment.