China has announced plans to ramp up security ahead of the Communist Party's 60th anniversary this October.
In a statement posted on the Ministry of Public Security's Web site, Vice Minister Zhang Xinfeng is quoted as saying the security campaign, which starts in May, is aimed at ensuring a steady and harmonious social environment.
The statement says that police across the country will focus on maintaining social order, cracking down on criminal gangs, tracking wanted criminals and phone scams.
A similar security campaign was imposed ahead of the Olympics in Beijing last summer. Also this year, China launched security campaigns and travel bans in Tibet and the restive Western region of Xinjiang, which have politically sensitive anniversaries.
This year's campaign begins a little more than a month before the 20th anniversary of the bloody Tiananmen crackdown.
During the incident, China's military crushed months of pro-democracy demonstrations on and around Tiananmen Square, killing hundreds, perhaps thousands of protesters.
Some information for this report was provided by AP and China ministry of public security.