A four-month-old baby boy fell from an escalator on the third storey of a Shanghai shopping mall on Friday (Nov 11), and is currently in critical condition.

The incident happened around 2.30pm at Wu Yue plaza in Qingpu district of Shanghai.

The grandmother, carrying the baby in her arms, was seen in CCTV footage losing her balance as she stepped onto an escalator going down. The baby fell over the side of the escalator as the woman lost her hold on him.

The boy's mother was walking behind with her daughter when the incident happened.

Employees at the mall called for an ambulance, reported online news site Knews. The baby was rushed to the hospital, and is currently in critical condition.