tanks and soldiers pulled out of the capital, manama, but police stayed at a number of checkpoints. majority shiites began protesting in february, demanding a greater share of power. but in march, bahrain's sunni leaders called in troops from saudi arabia and other sunni states to crush the protests. the death toll from an e. coli outbreak in europe has risen to 17, with hundreds more cases reported. some 1,500 people have been sickened in germany, where most of the cases occurred. the german agriculture minister said today it's still not known where the very virulent food-borne bacteria originated. >> ( translated ): it's clear these bacteria have occurred in humans and we are working non-stop to find out where they have come from, therefore the entire chain is affected, production as well as all the subsequent steps until it finally is on the table. >> reporter: initial testing suggested most of the people who took ill had eaten certain tainted vegetables. later tests cast doubt on those findings. an apparent tornado hit near springfield, massachusetts, today. funnel showed a torn