homeland security correspondent jeff peggest has the latest on the information. >> gun store own robert abel says in the weeks before the orlando shooting omar mateen tried to buy body armour at his gun shop. mateen was told the store didn't sell body armor. >> at this time he pulled away and got on to the cell phone. when he was on his cell phone, he had a conversation in a foreign language that was of more concern. then he came back and he was requesting ammo. >> reporter: able says his employees were so concerned they called the fbi. authorities say the gun store was not able to provide them with a name. on the night of the shooting an official familiar with the time line tells cbs news that mateen was active on social media before and during the rampage. time records show that prior to the shoot magazineteen posted on facebook, alliance to isis leader abu al baghdadi. then after the shooting began, mateen paused and sources say he searched for pulse, orlando, and shooting. perhaps to see if a massacre was trendk online. he also made calls to 911 and to a television staitionz about t