Authorities have launched an investigation into the recent fatal avalanche in California's Sierra Nevada, focusing on the potential role of criminal negligence. The avalanche, which occurred near Soda Springs, California, has prompted local officials to conduct a thorough review of the circumstances. The investigation aims to evaluate the safety measures and protocols in place for the avalanche-prone area, examining whether any lapses in safety procedures or oversight contributed to the tragedy. The region's significant snowfall has heightened avalanche risks and complicated recovery operations.