Tillerson says China asked North Korea to stop nuclear tests

WASHINGTON -- U.S. Secretary of State Rex Tillerson said Thursday that China has threatened to impose sanctions on North Korea if it conducts further nuclear tests.

"We know that China is in communications with the regime in Pyongyang," Tillerson said on Fox News Channel. "They confirmed to us that they had requested the regime conduct no further nuclear test."

Tillerson said China also told the U.S. it had informed North Korea "that if they did conduct further nuclear tests, China would be taking sanctions actions on their own."

Earlier Thursday, the senior U.S. Navy officer overseeing military operations in the Pacific said the crisis with North Korea is at the worst point he's ever seen, but he declined to compare the situation to the Cuban missile crisis decades ago.

"It's real," Adm. Harry Harris Jr., commander of U.S. Pacific Command, said during testimony before the Senate Armed Services Committee.

Harris said he has no doubt North Korean leader Kim Jong Un intends to fulfill his pursuit of a nuclear-tipped missile capable of striking the United States.