AUSTIN,Texas - CBS News has obtained photos of the person investigators believe dropped off two suspicious packages on Sunday.   Investigators say this is a person of interest and that the two packages are connected to the string of explosions in Austin.

We're told the U.S. Marshal's Lone Star Fugitive Task Force - Austin Division - gathered the video and helped the lead agencies get an idea of where this person of interest might be.

Sources tell KEYE, the CBS affiliate in Austin, the photos are from surveillance video taken inside a south Austin FedEx Office store on Brodie Lane where the person shipped the two packages. 

One of the two packages exploded on a conveyor belt at a FedEx sorting facility outside of San Antonio in Schertz. The second package was intercepted at a facility near the Austin airport.

The second suspicious package was being treated as if it could be a bomb according to Congressman Lloyd Doggett's office. Both packages originated from the same location.

The photos show the person, possibly wearing a wig and gloves, carrying two packages. According to time stamps, the person was in the store around 7:30 on Sunday evening. 

Authorities believe the same person or persons are connected to the two packages that surfaced Tuesday are also responsible for the four other explosions that began on March 2nd that killed two people and injured six.