Two federal law enforcement officials tell CNN that the FBI has suspected bomber Dzhokhar Tsarnaev's laptop. It's unclear how or when investigators got possession of the computer. We also don't know whether investigators are still analyzing it. The news comes just a day after investigators arrested three of Tsarnaev's friends. They are accused of taking items, including the laptop, out of Tsarnaev's dorm room days after the terror attack. Officials say some of the items were later found in a landfill. But officials say the laptop wasn't found there.