Oakland musician Dave Deporis died on Wednesday after being robbed and dragged behind a car, the East Bay Times reports. He was 40. Witnesses and police said Deporis was sitting outside a cafe in Oakland’s Temescal neighborhood around 12:30 p.m. when a man grabbed his laptop and tried to escape in a red Audi SUV. Deporis reportedly chased after the thief, grabbed onto the vehicle, and was dragged down the street. Officers said they discovered him with “traumatic injuries.” He was pronounced dead at the hospital. Police have collected surveillance footage from the neighborhood, but have not yet identified the perpetrators or made any arrests, ABC reports. Friends of the musician will be holding a celebration of his life on September 9. His family have started a GoFundMe page to fund an album of Deporis’ numerous recordings.

Several musicians have paid tribute to Deporis—who used to frequent New York cafes—including Anohni, Regina Spektor, and Kimya Dawson. Spektor and My Brightest Diamond shared videos of Deporis’s music. Anohni called him a “beautiful musician,” adding, “I have listened to a recording of his song ‘Swan King in the Snow’ hundreds of times over the years.” See their messages and listen to that song below.

Hear Deporis’s song “Swan King in the Snow” below: