MUMBAI, Sept. 20 -- A 54-year-old plumber-cum-delivery executive was killed on Friday after an iron barricade installed for the construction work of Mumbai Metro Line 4 fell on his moving two-wheeler on LBS Marg in Vikhroli West, making him the fourth person to die in three fatal incidents linked to the project since February this year. The deceased, Wasi Haider Ismaili, a resident of Ghatkopar, was headed towards Mulund on an electric scooter when the incident occurred near the upcoming Godrej Company Metro station. The police have registered an FIR under Section 106 (causing death by negligence) of BNS against the project director, site supervisor, manager and unidentified company officials,, after Ali Raza Wasi Haider Rizwi, Wasi Haider's son, filed a complaint. According to the family, Wasi Haider left home for work at around 9.30am on Friday. About two hours later, they received a call from the Parksite police asking them to rush to Rajawadi Hospital in Ghatkopar, where Haider was declared dead at around 12.30pm. Police said Haider was travelling towards Mulund, an iron barricade placed as part of the Metro construction work fell onto him, causing severe head, shoulder injuries, resulting in his death. Speaking to HT, an MMRDA official said, "We have instituted a detailed inquiry to ascertain the circumstances of the incident and examine compliance with prescribed safety protocols. Based on the preliminary findings, MMRDA has decided to impose a penalty of Rs.2 crore on the contractor, M/s Godrej & Boyce. Further action, if warranted, will be taken based on the findings of the detailed inquiry," an MMRDA official said. Another MMRDA official, speaking on condition of anonymity, however, offered a different preliminary account. "What we understand is that the biker dashed against the barricade, which then collapsed on him. We are waiting for the police investigation," the official said. The latest death comes just days after two construction workers were killed when an iron staging platform collapsed at the Metro 4 site near Bhakti Park monorail station in Wadala on September 12. The MMRDA imposed a Rs.5-crore penalty on the contractor and Rs.1 crore on the project's general consultant following the Wadala accident. The September deaths were preceded by fatal accident reported in February when a precast concrete parapet segment from the under-construction Metro 4 viaduct fell onto an auto and a car on LBS Road in Mulund, killing 49-year-old Ramdhani Yadav and injuring three others. The MMRDA paid Rs.40 lakh as a compensation to Yadav's family....