Search Intensifies for Missing ASU Graduate Student at Grand Canyon The family of Sandarsh Krishna and the National Park Service are seeking a key witness to help locate the missing computer science student who vanished during a trip to the South Rim. The search for Sandarsh Krishna, a promising graduate student at Arizona State University, has intensified as his family and authorities struggle to find him following his disappearance at the Grand Canyon. Sandarsh, who had moved from India to Arizona in 2024 to pursue a master's degree in computer science, was expected to graduate on May 9. His sudden disappearance has left his family in a state of profound distress, especially since he missed his final exams and a critical job interview. The last time his family heard from him was on April 27.He had shared plans to visit Las Vegas, with a scheduled stop at the South Rim of the Grand Canyon to experience the natural wonder. Investigation efforts led by the National Park Service have focused on a specific area known as the Rim Trail off Hermit Road, situated between Mohave Point and Bright Angel Lodge. This is believed to be the last known possible location of the student.A significant development occurred when an unknown individual returned a backpack belonging to Sandarsh at Bright Angel Lodge on the morning of April 28. Authorities have clarified that this individual is not a suspect in the case but is instead viewed as a key witness.The National Park Service believes this person may possess critical information regarding the exact location where the backpack was discovered, which would allow search teams to narrow their perimeter and focus their efforts on a more manageable area of the park. The family's grief is compounded by the silence from Sandarsh's mobile device. According to Pooja Shivananjappa, his sister-in-law, cell phone data has not shown any movement since Tuesday, creating a frustrating gap in the investigation.In their desperation, the family has taken the additional step of hiring a private investigator to supplement the official search conducted by the National Park Service. Pooja describes Sandarsh as a brilliant young man who possessed a childlike heart, a deep love for chess, and an unwavering commitment to his family. He was known for calling his mother almost every single day, making his current silence all the more heartbreaking for those who love him.The vast and rugged terrain of the Grand Canyon presents an immense challenge for rescue operations. With steep drops, hidden caves, and sprawling trails, the search area is daunting. The urgency of the situation is heightened by the approaching graduation date, a milestone that Sandarsh had worked tirelessly toward. The community is being urged to assist by providing any information that might lead to his location.Anyone who recognizes the person who returned the backpack or has any knowledge of Sandarsh's whereabouts is asked to contact the National Park Service rangers immediately. The hope is that the missing piece of the puzzle will be found soon, bringing the brilliant student back to his family and allowing him to complete his academic journey