Nope, no Amber Alert. No description of abductor or vehicle...the same reason that most of them are never issued.
Scuse me while I momentarily see red over that.
The Amber Alert can't be called without some idea of who took him. That is the structure of the Amber Alert - the AA is mostly used, I believe, in cases of non-custodial parental abductions, and are not very effective in disappearances like this one. Otherwise, everyone would get flooded with notices of the child's name and picture, but not much else of value - info which the media already puts out there.
Perhaps another code is in order - Amber for abductions in which a kidnapper vehicle/description/etc is available, and another one for general missing kids.