GOMA, Congo (AP) — A Congolese soldier says he's happy to be back after being held for two days in neighboring Rwanda, in a case that heightened already mounting tensions between the two countries.

Sgt. Major Munanga Kafakana embraced the vice governor of Congo's North Kivu province on Tuesday in front of reporters following his release.

Congolese army spokesman Col. Olivier Hamuli said that Kafakana was detained Sunday while trying to visit family in the eastern Congo city of Goma.

Rwandan officials, though, said Kafakana had crossed into Rwandan territory, but Congolese authorities insisted he had not.

Congo's army has engaged in several rounds of heavy fighting in the border region this year with the M23 rebel group, which observers accuse Rwanda of backing despite consistent denials from Rwanda's government.