LONDON — Six people, including a newborn baby, have died in a massive fire at a tower block in London, the city's emergency services said Friday.

"There were six fatalities -- three adults and three children," a London Fire Brigade spokesman said after the blaze in Camberwell, south London.

Some 30 people trapped inside, who were in "immediate peril," have now been rescued, he added. The blaze is now under control and there are no reports of people still trapped inside.

The Metropolitan Police said the victims included a three-week-old baby, two children aged about six and seven, a woman in her 30s and two other adults. A further 12 people have been taken to hospital.

Around 100 firefighters were at the scene of the fire, which started on the fourth floor of the local authority-owned block and spread to the 11th.

Witnesses spoke of distressing scenes as the fire, which was reported just before 4:30 pm (1530 GMT), took hold.

"There were kids screaming, there was all sorts of stuff going on," Rob Atthill told BBC television.

"The people I was with, they climbed on the roof to see what was happening and they could see faces of people in the windows, people were trying to smash windows, it didn't look very good."

An investigation will now be held into the cause of the fire, which is unknown at the moment.