PTT Exploration & Production, the operator of an offshore project leaking oil and gas into the Timor Sea off Western Australia, said it plans to stop the spill by October.

“The latest phase of the relief well drilling operation is continuing and is expected to be completed over the next few days,” the company told Bloomberg in a statement.

Oil, gas and condensate started seeping into the Timor Sea at the company’s Montara well on 21 August.

PTT, Thailand’s only publicly traded oil exploration company, aims to intersect the well and inject heavy mud to stop the flow.

Drilling began on 14 September and the previous phase was completed on 21 September, PTT said.

Meanwhile, the federal government has denied claims by the Green Party that it has inadequately monitored marine life in an area struck by an oil spill, according to Australian reports out today.

Green senator Rachel Siewert said the lack of response by authorities to address potential impacts on marine life was a concern, according to the Australian Associated Press.

The World Wildlife Fund (WWF) is currently surveying the effect on animals near the spill site.