A shark attacked a man swimming at a Maui beach on Sunday morning, injuring his leg and hand, authorities said. Kyle Gruen, 29, of Vancouver, Canada, was about 30 feet to 40 feet offshore when the shark grabbed his left side, said his twin brother, Jeff Gruen, who was at the beach when the attack happened. "He was swimming along when just all of a sudden it got him," Jeff Gruen told The Honolulu Advertiser. "He pulled away and kicked it off, and it took off right away." Maui County spokeswoman Ellen Pelissero said the victim was attacked near Kihei. He was listed in stable condition at Maui Memorial Medical Center. As a precaution, authorities closed beaches about one mile (more than a kilometer) in either direction of the attack.