BEIJING — China's military says it hopes India will make good on its pledge to swiftly return a Chinese soldier found lost along their mountainous border where the sides have been locked in a tense standoff.

The defense ministry issued a statement late Monday saying the soldier had been helping herders round up yaks when he lost his way on Sunday evening.

The Chinese side informed their Indian counterparts of the missing individual and were informed shortly afterward that he had been found and would be returned after undergoing a medical checkup, a spokesperson for the Western Theater Command, Zhang Shuili, was quoted as saying.

A statement from the Indian side Monday said the soldier, Cpl. Wang Ya Long was apprehended inside Indian-controlled Ladakh's Demchok area and was to be released soon.

It said the soldier "had strayed" across the de facto border along the eastern section of what's known as the Line of Actual Control, a loose demarcation separating Indian- and Chinese-controlled areas.

–Moldo meeting point after completion of formalities," the statement said.

The high-altitude standoff began in early May with a fierce brawl, and exploded into hand-to-hand combat with clubs, stones and fists on June 15 that left 20 Indian soldiers dead. China is believed to also have had casualties, but has not given any details.

China detained at least 10 Indian soldiers, including four officers, following the deadly brawl. They were returned three days later after intense military and diplomatic negotiations.

India and China have each stationed tens of thousands of soldiers backed by artillery, tanks and fighter jets and are bracing for a harsh winter in the cold-desert region, where temperatures can fall to minus 50 degrees Celsius (minus 58 Fahrenheit).

The nuclear-armed rivals have accused each other of crossing into rival territory and of firing shots for the first time in 45 years.

Relations between the two countries have often been strained, partly due to their undemarcated border. They fought a border war in 1962 that spilled into Ladakh and ended in an uneasy truce. Since then, troops have guarded the undefined border and occasionally brawled. They have agreed not to attack each other with firearms.

India unilaterally declared Ladakh a federal territory and separated it from disputed Kashmir in August 2019, ending Indian-administered Kashmir's semi-autonomous status. It also vowed to take back the Aksai Chin plateau.

China was among the first countries to strongly condemn the move, raising it at international forums including the U.N. Security Council.