A tow boat was reportedly leaking fuel as it sank in the Mississippi River at LeClaire, Iowa on Monday, November 25, 2013. Rescue crews were initially called to investigate a vessel leaking fuel and sinking at around 4:30 p.m. Monday, November 25th, 2013. Emergency responders from LeClaire police and fire departments, as well as the U.S. Coast Guard, worked to keep the 144-foot Stephen L. Colby tow boat above water as it slowly sank in the Mississippi River.