189 passenger and crew aboard a crashed Indonesian jet were “likely” killed in an accident, said Indonesia’s search and rescue agency on Monday, it also announced it had found human remains.

“My prediction is that nobody survived because the victims that we found, their bodies were no longer intact and it’s been hours so it is likely 189 people have died,” Bambang Suryo Aji told reporters who was the agency operational director.

The aircraft crashed into the sea as it tried to get back to the capital, Jakarta, from the place where it had taken off minutes earlier, and there were likely no survivors, officials said.

Lion Air flight JT610, an almost new Boeing 737 MAX 8, was heading towards Pangkal Pinang, which is the capital of Bangka-Belitung tin mining region. Rescue officials said they had recovered some human remains from the crash site, which was about 15 km (9 miles) off the coast.

Indonesia which is one of the world’s fastest-growing aviation markets has a patchy safety record. If all aboard have died, this crash will be the country’s second-worst air disaster since 1997.

The pilot had asked to return to base (RTB) after the plane took off from Jakarta. It lost contact with ground staff after 13 minutes.

“It’s correct that an RTB was requested and had been approved but we’re still trying to figure out the reason,” Soerjanto Tjahjono, head of Indonesia’s transport safety committee, told reporters, referring to the pilot’s request.

“We hope the black box is not far from the main wreckage so it can be found soon,” he said, indicating to the cockpit voice recorder and flight data recorder.

Search and rescue agency head Muhmmad Syaugi told in a news conference earlier that no distress signal had been received from the emergency transmitter of the aircraft.

Spokesman of national search and rescue agency, Yusuf Latief, said there were likely no survivors.

At least 23 government officials, four employees of state tin miner PT Timah and three employees of a Timah subsidiary, were on the plane. A Lion Air official said one Italian passenger and one Indian pilot were on board.

Ambulances were lined up at Karawang, on the coast east of Jakarta, and police were preparing rubber dinghies, a Reuters reporter said. Fishing boats were being used to help search.

Edward Sirait, chief executive of Lion Air Group, told reporters that the aircraft had a technical issue on a flight from the resort island of Bali to Jakarta but it was “resolved according to procedure”.

Sirait declined to specify the nature of the issue, however, he said none of its other aircraft of that model had the same problem. Lion had operates 11 Boeing 737 MAX 8s and it had no plan to ground the rest of them, he said.

Boeing was deeply saddened by the loss, it said in a statement, and was ready to provide any technical assistance for the investigation.

From FlightRadar24 data the first sign of something amiss was around two minutes into the flight, when the plane had reached 2,000 feet.

It descended more than 500 feet and smeared to the left before climbing again to 5,000 feet, where it stayed during most of the rest of the flight.

In the final moments, it began gaining speed and reached 397 mph before data was lost when it was at 3,650 feet.

In April 2018, Lion Air announced a firm order to buy 50 Boeing 737 MAX 10 narrowbody jets for a price of $6.24 billion. This is U.S. planemaker’s largest customer