Police have confirmed 30 people died in a fire that engulfed a high-rise apartment building in West London early Wednesday morning.

London police said another 24 people remain in the hospital and 12 of those injured in the Grenfell Tower fire are in critical care, according to the Associated Press.

The number of victims is expected to increase, and authorities said they might not be able to identify all of those who died.

Police said they identified the place where the fire started, and it's unlikely the blaze was set deliberately.

The 24-story apartment building, Grenfell Tower, was built in 1974 and underwent $13.2 million refurbishment recently. It has 24 floors total, and 120 apartments on 20 residential floors.

Residents of the apartment tower, part of the Grenfell Action Group, had expressed concerns regarding the safety of the high-rise, which is managed by the Kensington and Chelsea Tenant Management Organisation.

Police have since launched a criminal investigation into the circumstances surrounding the fire.

On Friday, Queen Elizabeth II and Prince William, the Duke of Cambridge, visited the site to meet with residents and community representatives.

British Prime Minister Theresa May visited the scene Thursday, but she didn't meet with residents.