article_snippet: The formerly 'happy-go-lucky' student had also started dressing in traditional Muslim attire.
article_snippet: One friend told The Sun that One friend Facebook posts praising terror chiefs had been out of character. '
article_snippet: his Facebook posts praising terror chiefs had been out of character set off an alarm bell among people who knew One friend,' people who knew him added. 
article_snippet: One friend wasn't known at all for causing trouble or having extreme views.'
highlights_snippet: Friends became concerned when he started praising terror chiefs online .
  