US
Both aid workers being held by the Pakistan Taliban near the border with Afghanistan.
Aid workers had been working for a year to help rehabilitate villagers affected by devastating floods in 2010.
His car was found abandoned in Naushahro Feroz.
Police in Kot Addu have arrested four people in connection with last week's kidnapping of two foreign aid workers.
Punjab IG forms committee to recover two foreign aid workers abducted from Multan.
Clues unravel into the kidnapping of German national Bernd, 70, and Italian national Giovanni, 24.
The workers were returning after visiting flood victims in Kot Addu when armed men abducted them.