Washington (Agencies): The US government is worried about the security of Myanmar democracy leader Aung San Suu Kyi after what it called a "veiled threat" against her in a state-run newspaper article.

State Department spokesman PJ Crowley said the article suggested that if Suu Kyi proceeds with plans to reconstitute her National League for Democracy party "she could be in some danger."

The newspaper commentary on Sunday warned that Suu Kyi and her party will meet "tragic ends" if they move against recent political changes. It criticised her for failing to end her support of international sanctions against Myanmar.

Crowley said the comment was of "great concern" as it was published in a state-run newspaper," so one would guess there's actually something behind this."

"If you look at history, there have been times where she has been released and then they've found a way to bring her again under house arrest. We hope that with her release she's able to do what she wants to do, which is reconstituting her political party as part of the process of opening up civil society within Burma," he added.

Suu Kyi has spent 15 of the last 21 years in detention. After a previous release in 2002, Suu Kyi widely travelled the country, attracting crowds of supporters, until in May 2003 a government-backed mob attacked her group during a political tour of northern Myanmar. Dozens of her supporters reportedly died, and Suu Kyi was arrested until November 2010.