American journalist Austin Tice is believed to be still alive, according to the head of an international aid group. Nizar Zakka, who runs the Hostage Aid Worldwide organization, said there has never been any proof that Tice, who has been missing since 2012, is dead. Zakka told reporters in Damascus on Tuesday that Tice was alive in January and being held by the authorities of ousted Syrian President Bashar Assad. He added that U.S. President Joe Biden said in August that Tice was alive. Zakka said he believes Tice was transferred between security agencies over the past 12 years, including in an area where Iranian-backed fighters were operating. Asked if it was possible Tice had been taken out of the country, Zakka said Assad most likely kept him in Syria as a potential bargaining chip. Biden said Dec. 8 that his administration believed Tice was alive and was committed to bringing him home, although he also acknowledged that "we have no direct evidence" of his status.