CNN CNN Newsroom With Carol Costello December 11, 2015 15:15:00
And they say this search could take days. they're looking for any evidence, they say, may be linked to the shooters in the san bernardino terror attack. they believe they may have been in this area on the day of the shooting. we're told investigators are following up on a couple of leads that brought them to this park. they've already scoured the surrounding area. now it's the lake they have to get through, which could be a long and arduous task. it's very murky water they'll be working in. now, we're also learning this morning that investigators are going back and looking closer at whether sy...