LAS VEGAS (KLAS) — A discovery at Lake Mead on Monday has been confirmed as partial human remains, according to the Clark County Coroner’s Office.

Video from Jesus Catalan showed the discovery of the partial remains.

“It is partial remains right now but we don’t have confirmation as to what they are right now,” said Melanie Rouse, Clark County Coroner. “When it comes to identification it is linking the antemortem and postmortem information, postmortem is what we know right now and ante is what is collected before so those things have to align for us to make an ID.”

A person at Swim Beach near Boulder Beach at Lake Mead had reported possible human remains to the National Park Service around 4:30 p.m.

This is the third discovery of remains found at Lake Mead since May, when a body was found in a barrel near Hemenway Harbor on May 1. Less than a week after that body was found, additional human remains were found at Callville Bay.

The remains have become exposed due to increasingly low water levels at Lake Mead. Sunken boats and discarded items have also resurfaced as the water line recedes.

“It’s a little unsettling for sure and you got to keep your eyes open and try not to swallow the water,” said Lake Mead swimmer, Justin Truelove.

Rouse says that her office will exhaust every option to identify the remains. Typically the remains are held onto for a year while they try to make an ID and find the cause of death.