Two Arizona Women Killed in Armed Attack on Mexican Highway

Authorities investigate deaths of dual US-Mexican nationals found in bullet-riddled vehicle in Sonora state.

Victims identified as 72-year-old Enedina and 82-year-old Ubaldina, originally from Caborca.
Their SUV was found overturned and riddled with bullets on the Sonoyta-Caborca highway.
Mexican authorities recovered firearms, ammunition, and ballistic vests from a stolen truck nearby.
US State Department confirms the victims' US citizenship and is monitoring the investigation.
No arrests have been made; search for the assailants continues with support from US officials.