Electrical equipment and 4,000 litres of diesel,together worth Rs 40 lakh,were allegedly stolen from an oil platform at Bombay High last week.
Police said the theft took place between February 13 and 18 aboard Mukta Oil Platform,part of Panna-Mukta oil fields 70 nautical miles off the coast.
It is a joint venture by ONGC,Reliance Industries Limited and British Gas India.
Individuals entering Mumbai Port Trust premises would now be screened more carefully,said Pandurang Dhoke,senior inspector,Yellow Gate police station.
A few fishermen are being questioned,as rising diesel prices have kept the community from the seas for over a fortnight.
Apart from the diesel stored in barrels,a JDC electrical charger,solar charger controller card,telemetry electrical charger,emergency battery charger,nab and solar charge controller and 2-core and 4-core cables worth Rs 38 lakh were stolen,police said.
Operations on the platform are automated and employees from all three firms visit it once a week. The theft came to light on February 18,but B G India did not register a complaint until a week later,police said.
They were conducting internal inquires. There are no CCTV cameras on the platform. It could easily be company employees or someone who entered the platform by sea. B G India told us they have begun screening employees who work on the platform. We are questioning scrap dealers and also fishermen fishing nearby. So far,we have interrogated over 100 people,including 35 scrap dealers, said Dhoke.
He said a police team led by an inspector had been formed to investigate the theft. Additional commissioner of police (south region) Krishna Prakash would monitor the probe.