Hikers conducting their own search for missing Hawaii island student Daylenn Pua reported that they heard a cry for help near the Koolau ridge line early Monday evening, prompting the Honolulu Fire Department to extend its extensive land and air search for one more day.

HFD officials had announced Monday night that the search, which began on Saturday, would be suspended pending new information.

Fire rescue personnel were assisting volunteer hikers out of the area when the party reported hearing the voice. “They were quite adamant that they heard something,” said HFD spokesman Capt. David Jenkins. “So tomorrow, pending a determination on the weather, we’ll be back up there to continue the search.”

The 18-year-old Hawaii island student was last seen Thursday catching a bus from Waianae on his way to hike the Haiku Stairs.

Pua was reported missing on Friday afternoon and HFD personnel began a wide-scale search on Saturday morning.

Pua had told family members that he planned to hike the off-limits trail, also known as the Stairway to Heaven, and posted photos of himself indicating that he was on the stairs Friday.