Laos cave rescue workers report 'knocking sound' in search for last 2 missing people
Rescue workers searching flooded caves in Laos reported hearing "a knocking sound" from inside the system as they sought to extricate two people.
Reports & sources
ABC 7 Chicago
Laos cave rescue workers report 'knocking sound' in search for last 2 missing people (opens ABC 7 Chicago)ABC 7 Chicago's feed description
UPI
Laos rescuers heard ‘knocking sound’ searching cave for lost villagers (opens UPI)UPI's feed description