Jaish ul-Adl, described by Iran as a terrorist group, has claimed responsibility for the abduction, Iran's Press TV reported. The Iranian government says it is working with Pakistani authorities to secure the men's release.
Hossein Ali Amiri, a spokesman for Iran's Interior Ministry, said Monday the government has learned the guards are unharmed and healthy.
"The issue is very sensitive. The safety of these people is of great importance to us. Plans and measures must proceed in a way that their lives won't be at risk," Amiri said.
The Tasnim news agency reported Iranian and Pakistani legislators met Sunday to discuss the situation.