February 12, 2016 11:25 am Woman Killed by Dislodged Manhole Cover on I-93 State police investigators are still trying to determine what caused the manhole cover to become airborne. US & World Videos 0:47 WATCH: Comet fragment lights up the sky in Portugal 1:58 ICC seeking arrest warrants for Israeli and Hamas leaders 1:43 World reacts to death of Iran's president 1:07 Cargo ship that crashed into Baltimore bridge moving back to port 0:33 Man steals school bus near Tampa, then drives it to Miami: FHP