Newcrest Mining of Australia told Reuters that its Hidden Valley Mine in Papua New Guinea remained closed on June 20 following the following the death of a worker on July 18.

“Safety is our number one priority and production at Hidden Valley is suspended until further notice,” spokeswoman Rachel Eaves said in an email to Reuters.

It is the second incident in little over a month where a Newcrest mine in Papua New Guinea has been forced to suspend production, Reuters reported.

The company’s larger Lihir gold mine on Lihir Island in the Bismark Sea was shut for 36 hours in June due to a dispute over a compensation package.

The Hidden Valley mine is owned 50-50 by Newcrest and Harmony Gold Mining Ltd of South Africa.

The employee was fatally injured in an incident on a road at the mine site and an investigation was underway, according to an earlier Newcrest statement.

It was not immediately clear what had led to the fatality, according to Eaves.

The Hidden Valley mine has a production target of a quarter of a million ounces of gold and 2.5 million to 3.0 million ounces of silver annually.