LOS ANGELES : A US man was jailed for 13 years Monday for planning to travel to Pakistan to give weapons training to Al-Qaeda fighters, after spending time fighting in Syria, prosecutors said. Sinh Vinh Ngo Nguyen, 25, pleaded guilty late last year to attempting to provide material support to a designated foreign terrorist organization. US District Judge John Walter called the crime “a very serious offense that requires a correspondingly long sentence.” Nguyen, based outside Los Angeles and also known as Hasan Abu Omar Ghannoum, admitted that in late 2012 he traveled to Syria, where he joined forces fighting President Bashar al-Assad.

During a four-month stay there, he posted online that he was fighting against the Assad regime, and that he had had a “confirmed kill.”