Google helped US police arrest a man in Houston, after the internet giant tipped_the_National Center for Missing and Exploited Children (NCMEC)_off about explicit images of a child in his email account, Business Insider reports. The man, who was formerly convicted of sexually assaulting_a child 20 years ago, was caught after police were alerted to the fact that he had emailed images to a friend. Google hasn't commented on the report, but police told TV news station KHOU Channel 11_that they weren't given access to the images in question, but did_use them to issue an arrest warrant that_subsequently found further images_for...