In 1994, while following a group of killer whales off the Galapagos Islands, we encountered a freshly dead Cuvier's beaked whale (Ziphius cavirostris) floating at sea. Inspection of the carcass indicated killer whale teeth marks along it's side, a large gash wound penetrating into the body cavity, and broken ribs. The references are Palacios et al. (1994, 2004).
Palacios, D.M., Rodriguez, P. and Brennan, B. 1994. Notes on the Cuvier's beaked whale (Ziphius cavirostris), with observations of a dead specimen. Noticias De Galápagos 54: 29–31.
Palacios, D.M., Salazar, S.K. and Day, D. 2004. Cetacean remains and strandings in the Galápagos Islands, 1923-2003. Latin American Journal of Aquatic Mammals 3: 127–150. (see p. 129).