In a statement, the National League for Democracy said its members had been unable to get details of Suu Kyi's physical condition, The Telegraph reported.

"She is refusing food supplies in protest against ... her unlawful detention under the security law," the party said. "Her safety and well-being are the sole responsibility of the authorities who have unlawfully detained her."

The league won parliamentary elections in 1990, but the military junta ruling the country formerly known as Burma refused to relinquish power. Suu Kyi has been under confinement for 13 of the past 19 years.

In 1999 and 2003, rumors that she was starving herself turned out to be unfounded. She reportedly told her lawyer, Kyi Win, Monday that she was well but had lost weight.