Rosario, Argentina—A massive pile-up involving four vehicles on Route 9 left two people dead and several others injured early this morning. The Traffic Safety Agency reported that the collision occurred under low visibility conditions caused by thick morning fog. Emergency responders worked for several hours to extricate the victims from the crushed vehicles.

The incident started when a heavy truck reportedly jackknifed, causing a series of rear-end collisions involving three passenger cars. Both deceased individuals were occupants of the lead vehicle that was struck by the truck. Paramedics confirmed their deaths at the scene while stabilizing four other survivors for transport to a nearby hospital.

Traffic on the major highway remained diverted for nearly six hours while crews cleared the wreckage and cleaned fuel spills from the asphalt. Investigators from the traffic agency are currently evaluating the brake marks and the speed of the vehicles involved in the crash. Fog is considered a primary factor in the accident, but they are also looking at whether the truck driver was operating within speed limits.

This stretch of Route 9 is a frequent site for high-speed collisions during the winter months. Road safety advocates have long called for better lighting and electronic warning signs to alert drivers to rapid changes in weather conditions. The government is expected to face renewed pressure to upgrade the infrastructure following this latest disaster.

Family members of the victims have arrived at the local precinct to provide identification. The survivors remain in stable but serious condition at the regional trauma center. Authorities have withheld the names of all individuals involved until the notification process is complete.

The truck driver was held for initial questioning and underwent a standard sobriety test, which returned negative results. The investigation is now focused on recreating the timeline of the pile-up using witness accounts from other drivers who were in the vicinity. The highway is now open, but traffic remains congested due to residual investigations.

Responders are monitoring the area for any secondary accidents as traffic resumes. The traffic agency will release a full technical report on the crash within the coming week.