NEW ORLEANS (AP) — Somebody shot and killed a bottlenose dolphin found dead over the weekend on Elmer’s Island, and there’s a reward for information about whoever did it, the National Oceanic and Atmospheric Administration said Tuesday.

The Whale and Dolphin Conservation Society is offering a $1,500 reward for information leading to the conviction of the person or people who shot the dolphin, according to a news release from NOAA Fisheries.

The dolphin’s body was found Saturday on the island, a state wildlife refuge just west of Grand Isle. It had been shot on the right side just behind its blowhole, and the bullet was found in its lung, said spokeswoman Allison Garrett.

Tips can be left anonymously. Anyone with information is asked to call 1-800-853-1964.

The Marine Mammal Protection Act of 1972 forbids harassing, harming, killing or feeding wild dolphins. Violations can be prosecuted either civilly or criminally, with maximum penalties of a year in jail and $100,000 in fines.