Could my nephew have aspergers syndrome?

My nephew is 2 years old and I'm only going on what his mum has told me as she lives in another country, but I am concerned about my nephew's development and behaviour. He has been slow with his development, he crawled at nine months, walked at 16months and still only has about half a dozen recognisable words in his vocabulary. He does things veyr methodically, for instance he always puts shapes in his shape sorter in the same order. He doesn't like going for a walk somewhere different and gets very agitated when his routine is disturbed. He doesn't sleep well, and never has and seems to have made up his own language. She tried to put him into daycare and he was so disruptive to the other children that he didn't last the week and he doesn't seem to interact with other children. Does this sound like Aspergers? or Autism? When he was born he stopped breathing and it took 20minutes to stabilize him, could this be a cause of his problems? He also tantrums and can carry it on for hours.