By Steve Neavling
ticklethewire.com
Suspects shot at and struck a Border Patrol vehicle on Friday evening in southern Arizona near Tucson, shattering a window with bullets, KGUN9 TV reports.
The agent was uninjured and did not return fire.
The suspects remain at large.
An agent assigned to a mobile surveillance unit south of Sierra Vista heard the gun shots ring out.
It was unclear why the agent came under fire.
