The rescue operation continued for the fourth day on Wednesday to find eight people trapped in the Srisailam Left Bank Canal (SLBC) tunnel in Telangana's Nagarkurnool district, with a last 40-metre stretch filled with mud and debris remaining an impediment for the rescue teams involved in the massive operation.

Telangana SLBC Tunnel Collapse Rescue Live Updates: "Ventilation and lighting till the last 50 metres is adequate but the real challenge is the area beyond. We are not in a position to disturb the collapsed area,

Rescue teams in Telangana deployed a sniffer dog to locate eight trapped workers inside the collapsed Srisailam Left Bank Canal tunnel. As sludge solidified, officials intensified efforts with thermal imaging and excavation plans.