Witnesses: Hezbollah supporters attack motorcade of US envoy in south Lebanon with stones

Witnesses say Hezbollah's Shiite supporters have attacked a U.S. envoy's motorcade with stones in southern Lebanon protesting her first visit to the militant group's stronghold.

Security officials and witnesses say no one was hurt in the attack but at least one of the U.S. convoy's 10 bulletproof vehicles was hit and broke down.

The attack occurred …