A team of Laotian and U.S. experts will excavate a U.S. warplane crash site next month to search for remains of missing American servicemen, a U.S. official said Wednesday.

The search will take place Dec. 10 in Nong district of the central Laotian province of Savannakhet, the official Laotian news agency KPL said Tuesday. It gave no more details on the crash site.The report, seen in Bangkok Wednesday, quoted a news release from Laos' Ministry of Foreign Affairs.

It would be the fourth joint excavation in the communist nation and the second this year. The U.S. official, who requested anonymity, said Laos has pledged to conduct three joint excavations this year.