(CNN) -- An American man detained in North Korea since last November has been sentenced to 15 years of hard labor, North Korean state news reported Thursday. A story on the KCNA website indicated that Pae Jun Ho had been sentenced by North Korea's supreme court. The North has used that name to refer to the man U.S. authorities call Kenneth Bae. A Korean-American, Bae entered North Korea on a valid tourist visa, a senior U.S. official told CNN on Monday. The official -- who spoke on background because of the diplomatic sensitivity of the issue -- said then that the State Department didn't know the exact charges against Bae.
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Kenneth Bae, referred to as Pae Jun Ho by North Korea, is sentenced, KCNA reports
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He was accused of serious crimes; a U.S. official wasn't sure what the claims were
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The U.S. had pushed for Bae's release on humanitarian grounds
The KCNA report indicated that the American was sentenced Tuesday for "carrying out serious crimes" against @placeholder, without specifying what exactly he allegedly had done.