A US CH-53 helicopter (top) on Monday lifts a UH-1 helicopter that made an emergency landing two days earlier on a beach in Uruma, in Japan's Okinawa Prefecture, amid safety concerns among local residents. Photo: VCG

Two US Marine bases in Japan's Okinawa have been put into lockdown after dozens of coronavirus infections, with local officials criticizing the American military's containment efforts.

Additional restrictions are also in place at the seven other Marine bases in the region after the spike in cases, a spokesperson confirmed.

There are tens of thousands of US servicemen stationed on the southern Japanese island, which has recorded roughly 150 civilian COVID-19 infections.

Government spokesperson Yoshihide Suga said Monday that 63 cases have been detected in recent days among US forces, most of them at US Marine Corps Air Station (MCAS) Futenma and Camp Hansen.

The Okinawa prefectural government said later in the day that they confirmed 32 more cases at Futenma, bringing the total to 95. 

In response to the outbreak, "enhanced Okinawa-wide protective measures" were announced for all nine Marine Corps bases in the region, spokesperson Major Ken Kunze told AFP.

Those measures include closing nonessential facilities on-base, banning off-base activities and encouraging telework.

"Additional measures are in place for Camp Hansen and MCAS Futenma to restrict people from entering and leaving those facilities," Kunze said in a statement.

There are approximately 20,000 US Marines in Okinawa, along with thousands more troops from other US military services.

Their presence on the island is a long-standing sore spot, with many in the region arguing they bear a disproportionate share of the burden of hosting American forces.

The spike in infections has created tensions with local officials, including Okinawa Governor Denny Tamaki, who said Saturday he was "shocked" by the number of cases.

"I can't help but feel serious doubts about US measures against infections," he said.

Tamaki said he has asked US forces to halt the arrival of troops rotating into the country and to boost anti-contagion measures.

It is unclear where the bases' clusters of infections originated, with Kunze saying an investigation was ongoing.

"We are also looking into reports of gatherings and directing individuals to quarantine... Leadership in Okinawa is working nonstop to curtail the spread," he said.

AFP