Kolkata: A six-year-old boy died after allegedly falling into the railing on the fifth floor staircase of a building in Ballygunge here. Police gave this information on Sunday.

The boy, son of domestic help Durga Nayek, was playing with his elder sister on the fifth floor, where they lived in the service quarters, when the accident occurred around 9.15 pm on Saturday, police said.

"The boy lost his balance and slipped through the gap in the railing and fell on the ground floor," a police officer said.

He was taken to Calcutta National Medical College and Hospital, but he succumbed to his injuries. Police said investigation has been started.