WASHINGTON (AP) — The U.S. has secured the release of a U.S. soldier who sprinted across a heavily fortified border into North Korea more than two months ago, and he is on his way back to America, officials announced Wednesday. U.S. ally Sweden and rival China helped with the transfer.

Left unanswered were questions of why Pyongyang—which has tense relations with Washington over the North's nuclear program, support for Russia's war in Ukraine and other issues—had agreed to turn him over and why the soldier had fled in the first place.

North Korea had abruptly announced earlier Wednesday that i...