Replying to Stolen macbook

so my laptop of three years recently broke, and i was on the search for a new computer on a tight budget. i was cruisin craigs list and ebay looking for used ones in good condition, and i came across a brand new macbook for $500, the new new model at that. i went to the guys place to pick it up, and i found myself in a tiny, shitty apartment, that contained a bedroom and kitchen, essentially empty, except for maybe 30 apple desktops/macbooks and other mac products in the corner of the bedroom, all brand new, covered with a blanket. needless to say, its pretty obvious this doodguy jacked an apple store, so it is a bad idea to register my new computer for applecare or anything like that? could this have any negative outcomes?