The helicopter that crashed, killing basketball great Kobe Bryant, his daughter and seven others, was not certified to fly in foggy conditions.
According to officials, Island Express Helicopters, which owned the Sikorsky S-76B that crashed, was allowed to operate under visual flight rules.
"The preliminary information is Island Express' 135 certificate did not allow for IFR flight," said Keith Holloway, a National Transportation Safety Board spokesman. "No other specifics are available at this time."
Preliminary investigations have pegged foggy weather conditions as a possible cause for the crash.
Meanwhile, the Lakers played their first game since Bryant's death, and paid tribute to the star by wearing his numbers - 8 and 24 - during warm-up. They went against the Portland Trail Blazers at the Staples Center in LA.
Qatar's prime minister said on Sunday that efforts to reach a new ceasefire in Gaza have made some progress but an agreement between Israel and Hamas to end the war remains elusive.
A huge blast most likely caused by the explosion of chemical materials killed at least 18 people and injured more than 700 on Saturday at Iran's biggest port, Bandar Abbas, Iranian state media reported.
The UN Refugee Agency (UNHCR) and the UN Office for the Coordination of Humanitarian Affairs (OCHA) have sounded the alarm over severe funding shortfalls that are hindering life-saving humanitarian aid in countries including Nigeria, Burundi, and Colombia.
A number of people were killed and multiple others were injured in Vancouver after a vehicle drove into a crowd at a Filipino street festival in the western Canadian city, police said on Saturday.