UN envoy Ibrahim Gambari has left Burma after managing to meet with the country's secretive top military leader, Gen. Than Shwe, in the remote capital of Naypyitaw.

He also revisited detained opposition leader Aung San Suu Kyi on Tuesday.

Gambari had been in Burma since Saturday following violent clashes last week between the military junta and pro-democracy demonstrators.

CTV's South Asia Bureau Chief Paul Workman crossed into Burma from Thailand on Tuesday, following the so-called Friendship Bridge in Mae Sot that monks have used to escape the junta.

But many people were reluctant to speak about the situation.

Back in Thailand, an elder monk who left Burma 30 years ago said he's been told at least 1,000 monks and nuns in Rangoon have been arrested - and sent to hard-labour camps.

Demonstrations started in August after fuel prices spiked, but grew in size and intensity last week after the country's revered Buddhist monks joined in.

However, last Thursday, the protests ended after the military opened fire on demonstrators.

According to the Burmese government, at least 10 people were killed, including a Japanese journalist.

However, a Norway-based dissident news organization is reporting that 138 people were killed by the military and 6,000 detained.

The British Broadcasting Corp. is reporting on its website that about 4,000 monks have been detained over the past week in Burma, also known as Myanmar.

Gambari met with Shwe Tuesday.

While no details of the meeting were immediately available, the UN has said that Gambari's mission was to appeal to the military rulers to take the democracy demands seriously.

Earlier in the day, Gambari also met with Deputy Senior Gen. Maung Aye -- who is one rank below Shwe.

Meanwhile, Gambari reportedly also met with Suu Kyi for a second time. He first met with the "The Lady", as she is known, on Sunday.

Suu Kyi, leader of the quashed National League for Democracy (NLD), saw her party win 82 per cent of parliamentary seats in a 1990 general election.

She never took power because in 1989, during the lead-up to elections, the military declared Suu Kyi ineligible to run and placed her under house arrest.

That year, the military regime later renamed the country, Union of Myanmar. (The name change was recognized by the United Nations, but not by the U.S., the U.K. or Canada.)

Since then, Suu Kyi has been in and out of detention while always refusing to leave Burma -- fearing that she would not be able to return to her people.

With a report by CTV's South Asia Bureau Chief Paul Workman and files from The Associated Press