“First the attackers blew up bombs outside a Pakistani prison. Then they scared off people in the area and used loudspeakers to call out specific inmates they were trying to release. Shiite prisoners left inside were killed.
‘It was a well-planned assault,’ noted CNN National Security Analyst Peter Bergen, who provided details Monday of the July 30 prison break in northwest Pakistan.”
Source:Intelligence chatter, prison breaks cause heightened security – CNN.com