An Indonesian plane (Boeing 737 MAX8-JT610) with around 188 travelers onboard crash into the Java Sea of Indonesia after the flight lost connection in 13 minutes of take off at Jakarta International Airport.
The plane was a Boeing 737 MAX 8, a brand new type of aircraft.
It wasn't immediately clear how many people were on board.
Indonesia's Lion Air said it has lost contact with a passenger jet flying from Jakarta to an island off Sumatra early Monday. The plane serving Lion Air flight JT 610 was configured to seat 189 passengers, said aviation consultant Gerry Soejatman. Debris from the aircraft as well as passengers' personal belongings were located floating in the Java Sea, as a massive rescue team was deployed to the crash site. Due to the problems, the US and the European Union had banned it from operating in their airspace, but both lifted that restriction in 2016.
A commercial plane which plummeted into the Java sea with nearly 200 people onboard was delivered brand new to budget airline Lion Air just weeks ago.
According to the BBC, the plane's pilots had requested to return to the airport, the head of Pangkal Pinang's search and rescue office, Danang Priandoko, told local news outlet Kompas.
Bhavyte Suneja was the captain of the Indonesian Lion Air Flight.
Search and Rescue Agency spokesman Yusuf Latif told AFP news agency: "The plane crashed into water about 30m to 40m deep".
"Last night, we were chatting together about his wife who is now seven months' pregnant, his plans and his dreams with his own small family until we fell asleep", he said as his wife wept and clung to him.
"The plane is so modern, it transmits data from the plane, and that we will review too".
"The Department of Foreign Affairs and Trade is aware of reports of the missing Lion Air aircraft in Indonesia".
If all on board prove to have died, the Lion Air crash would rank as Indonesia's second-worst air disaster, after a Garuda Indonesia A300 crash in Medan that killed 214 people in 1997.
Lion Air is considered one of Indonesia's fastest growing and most affordable airlines.
Following the crash, Australia's Smart Traveller website advised that Australian government officials and contractors have been instructed not to fly on Lion Air.
Indonesian airlines were barred in 2007 were flying to Europe because of safety concerns, though several were allowed to resume services in the following decade.