YANGON (Reuters) - Myanmar President Thein Sein has decided not to run in a parliamentary election scheduled for Nov 8, a senior official from his office said on Monday, meaning he will not be eligible for a second term as head of state.

"The president wrote a letter to U Shwe Mann, chairman of the ruling USDP Party, that he will not run in the next general election because of his health condition," the official told Reuters, asking not to be named.

The former military commander was elected to parliament in 2010.

From there, an electoral college nominated him as one of the three vice presidents and, subsequently, president.

USDP head Shwe Mann held a one-on-one meeting with opposition leader Aung San Suu Kyi after receiving Thein Sein's letter on Monday afternoon, sources close to the parties said, without giving details of what they discussed.

Suu Kyi said on Saturday her National League for Democracy party would participate in the election, ending months of uncertainty. The vote is being billed as Myanmar's first legitimate election in 25 years.