WASHINGTON (AP) -- The FBI should have done more to collect intelligence before the Capitol riot even though the bureau did prepare for the possibility of violence on Jan. 6, 2021, according to a watchdog report. It also says no undercover FBI employees were present that day and none of the bureau's informants was authorized to participate. The report Thursday from the Justice Department inspector general's office knocks down a fringe conspiracy theory advanced by some Republicans in Congress that the FBI played a role in instigating the events of Jan. 6, when rioters determined to overturn Donald Trump's 2020 election loss stormed the building in a violent clash with police.