London attacker had worked in Saudi Arabia teaching English

LONDON (AP) — The British man who killed four people during a London rampage had made three trips to Saudi Arabia: He taught English there twice on a work visa and returned on a visa usually granted to those going on a religious pilgrimage.
More details about attacker Khalid Masood’s travels, confirmed by the Saudi Arabian embassy in Britain, emerged Saturday amid a massive British police effort to discover how a homegrown ex-con with a violent streak became radicalized and why he la