A worker assists his colleague during the lifting of a turbine engine of the Lion Air flight JT610 jet, at Tanjung Priok port in Jakarta, Indonesia, November 4, 2018. REUTERS/Beawiharta

JAKARTA (Reuters) - Indonesian investigators said on Thursday that information from the cockpit voice recorder of a Lion Air jet that crashed in October was leaked to the media and they would hold a news conference at 0830 GMT.

The investigation into the crash of a Boeing 737 MAX aircraft that killed all 189 on board has become more urgent after a second deadly accident in Ethiopia last week prompted regulators to ground the worldwide fleet of the aircraft.