The accused has been booked under IPC section 304A
According to the police, Kakulte was taken into custody yesterday evening after interrogation by the Azad Maidan police.
"We have arrested an assistant engineer and further investigation is being done by our officers," said DCP Manjunath Singe, a spokesperson of the Mumbai Police.
Kakulte was booked under Indian Penal Code (IPC) section 304A (causing death by negligence), another official said.
A structural auditor was the first arrest in this case
The police had earlier arrested the structural auditor, Neerajkumar Desai, in the case, being probed by the Azad Maidan police.
Desai, who worked with a private firm, had allegedly gave clearance for continued use of the ill-fated bridge after a structural audit, police had said.
Desai had been booked under Section 304-II of the Indian Penal Code (culpable homicide not amounting to murder).
Structural audit of FOB wasn't carried out correctly: BMC report
A preliminary report into the collapse submitted by BMC had said the structural audit of the FOB at CSMT railway-station in South Mumbai wasn't carried out correctly.
It suggested major lapses when the structural audit of the FOB was carried out on August 13, 2018.
"The arrest was made after going through a BMC inquiry report on the incident," a police official said.
Six people died, 31 got injured when 40-year-old FOB collapsed
Six persons were killed and 31 others injured when the 40-year-old foot overbridge collapsed during evening rush hours on March 14. The bridge connected the area near the Times of India building with the iconic Chhatrapati Shivaji Maharaj Terminus (CSMT) station.