Five people were killed in a hot-air balloon crash that occurred Saturday morning in Albuquerque. Albuquerque police confirmed that the fifth person, a man who was previously transported to the hospital in critical but unstable condition, “suffered from his wounds” shortly after 1 p.m. EST.

“Our thoughts and prayers are with the families of all five victims who have tragically lost their lives.”

Joy Wang, KOB reporter, tweeted that the pilot had been confirmed as one of the four other deceased. These included two adult males (40-60 years old) and two adult women (40-60 years).

KOB reports that authorities responded quickly to reports of a balloon striking a power line shortly after 7:15 a.m. local.

Wang tweeted that Albuquerque Fire Rescue stated the cause of the accident is unknown.

According to police, the investigation into the incident will be handled by the Federal Aviation Administration (FAA) and National Transportation Safety Board (NTSB).

According to Wang’s FAA statement, five people were present when the Cameron 0-120 hot air balloon struck power lines about 6 miles from Albuquerque International Sunport Airport.

“I heard a loud bang. It was my girlfriend who heard it. It was like gunshots and it was loud boom, boom,” my girlfriend heard. It sounded like gunshots, and it was like an loud boom, boom,” Joshua Perez, a member of Wang’s gym at the time, said to Wang. He also noted that Wang and Perez saw the basket and balloon moving in opposite directions.

“You react quickly and I was thinking, ‘Save these people. These people must be saved,” Perez said. He noted that he saw “a huge fire” and was among those who switched off the propane, but it was “just too late.”

“No one was moving. They were already shocked, I believe. It is sad day in New Mexico. Perez explained to Wang that hot-air ballooning is a part of our culture.