UNITED NEWS INTERNATIONAL (UNI) — Authorities want to know how dozens of baby sharks suddenly died and washed up on a beach in Hawaii.

The creatures were found dead June 26 along the coast of Honolulu.

The Honolulu Star Adviser reported the sharks numbered between 50 and 100.

Officials with the Division of Conservation and Resources Enforcement were notified and launched an investigation into the incident.

These particular sharks were scalloped hammerheads — a species considered endangered by wildlife conservationists.

The mass die-off coincided with the sharks’ pupping season.

According to the Honolulu Star Adviser, state officials suggested the dead pups may have been caught in a net and then dumped on land.

Newsweek reports Hawaiian lawmakers are currently trying to legalize a $500 fine for killing a hammerhead with a net.

Outrage over the dead animals within the community prompted advocacy groups to offer a $5,000 reward for anyone who helps catch the culprit.