A combination of escalating violence, worsening health and poor access to conflict zones in Myanmar's Rakhine state is fueling a humanitarian crisis that is "spinning out of control," senior aid officials said on Thursday.

"We've seen a massive increase in violence not just between armed actors but also civilians, which is tearing families apart and leaving people to feel completely abandoned and disenfranchised," Peter Maurer, president of the International Committee of the Red Cross (ICRC), told the Thomson Reuters Foundation.

More than 600,000 Rohingya Muslims have crossed the border to neighboring Bangladesh since Aug. 25, when coordinated Rohingya insurgent attacks on security posts sparked a ferocious counteroffensive by the Myanmar army.