The United Nations says more than 420,000 Rohingya have fled for safety to Bangladesh in the face of an army campaign that includes the burning of villages and rape.
A Bangladeshi medical administrator, Aung Swi Prue, said six people died instantly in the crash, and three others died after reaching a hospital. Three people died after reaching a hospital, and 10 others were injured and are receiving treatment.
"We are trying to ensure all possible supports for the Rohingya on humanitarian ground", the minister said adding that construction of new camps, water purification plants and toilet facilities was in progress.
"The sheer number of people pouring in, the magnitude of the situation is quite overwhelming", said Mr Sathya Doraiswamy, chief of health at UNFPA.
"Our thoughts are with the families of the dead".
"The people coming in are hungry, thirsty, sick; they have been walking for days and they are emotionally traumatised", said Ms Rondi Anderson, UNFPA's midwifery specialist.
The aid shipment was bound for the north of the Rakhine State where insurgent attacks on August 25 sparked a military backlash.
Hundreds of people have been killed and thousands of homes have been burned. West Bengal CM Mamata Banerjee's tweet endorsing the United Nations appeal to help Rohingyas along with a comment that "not all commoners are terrorists has raised hackles of the BJP leadership".
Rohingya, who are predominantly Muslim, are reviled by many in Buddhist-majority Myanmar.
The aid package comes a day after Secretary of State Rex Tillerson spoke with Myanmar de facto leader of Myanmar Aung San Suu Kyi and "welcomed the Myanmar government's commitment to end the violence in Rakhine state and to allow those displaced by the violence to return home", according to the State Department.
The government has sealed the maritime boundary after receiving intelligence that Rohingya Muslims would try to enter India using sea routes, according to Indian media reports Wednesday. No injuries were reported. As the crowd swelled to 300, they started throwing rocks and Molotov cocktails at the officers, who responded by firing into the air, said police officer Phyo Wai Kyaw.
Buddhists in Rakhine have accused global aid groups of favouring Rohingya. "And it will sow seeds of hatred and chaos that may well consume the region for generations to come and threaten the peace of us all", Pence said. "We don't have anything here except peace", Faizullah, who fled Myanmar in 2012, said.