A big slab of the FOB came crashing at around 7.20 pm due to which several pedestrians were injured.
Mumbai Police, Fire Brigade and other rescue agencies reached the spot and immediately evacuated those buried under the rubble and shifted them to hospitals.
Five of the injured later succumbed to their injuries. The deceased included Apoorva Prabhu (35), Ranjana Tambe (40), Zahid Shiraj Khan (32), Sarika kulkarni (35) and Tapendra Singh (35). Of the three deceased women, two were the staff of GT Hospital.
"A slab of the bridge has fallen which led to the death and injuries of pedestrians. Railway and BMC will conduct a joint enquiry of the incident. There were minor damages in the bridge and the maintenance was going on, why the bridge was not closed during this period will be part of the enquiry," said Maharashtra Minister Vinod Tawde.
Prime Minister Narendra Modi expressed anguished over the tragedy.
"Deeply anguished by the loss of lives due to the footover bridge accident in Mumbai. My thoughts are with the bereaved families. Wishing that the injured recover at the earliest. The Maharashtra Government is providing all possible assistance to those affected," he tweeted.
Chief Minister Devendra Fadanvis also took to Twitter and expressed sadness over the incident, he said, "Pained to hear about the FOB incident near TOI building in Mumbai. Spoke to BMC Commissioner and Mumbai Police officials and instructed to ensure speedy relief efforts in coordination with @RailMinIndia officials."
The Railway Ministry said the bridge belonged to the Brihanmumbai Municipal Corporation (BMC) but the Ministry is extending all support to the victims.
"Railway doctors and personnel are cooperating with BMC in relief and rescue operations," informed Railways.