AKIPRESS.COM - Authorities announced a security crackdown Saturday in China’s Muslim northwest after a deadly bombing raised questions about whether tightening Beijing’s grip might be feeding anti-Chinese anger and a rise of organized terrorism, The Washington Times reports.

Thursday’s bombing at a vegetable market in Urumqi, capital of the Xinjiang region, killed at least 43 people and left the region’s ethnic Chinese on edge.

Police announced names of five people blamed for the attack and said they were part of a “terrorist gang.” Based on their names, all appeared to be Uighurs, the region’s most populous Muslim minority. Police said four were killed in the bombing and the fifth captured Thursday night.

An anti-terrorism campaign with Xinjiang “as the major battlefield” will target religious extremist groups, underground gun workshops and “terrorist training camps,” the official Xinhua News Agency said. “Terrorists and extremists will be hunted down and punished.”

Beijing blames unrest on extremists with foreign ties, but Uighur activists say tensions are fueled by an influx of migrants from China’s dominant Han ethnic group and discriminatory government policies.

In Beijing, the national capital, police announced they were canceling vacations for officers and would step up patrols at train stations, schools, hospitals and markets.

A measure under which passengers at stations in central Beijing are required to undergo security checks will be extended to three additional stations, the city government said. Passengers at all stations already are required to submit handbags and parcels for X-ray examination under rules imposed ahead of the 2008 Summer Olympics in Beijing.

Thursday’s violence was the deadliest single attack in Xinjiang’s recent history, and the latest of several that have targeted civilians in contrast to a past pattern of targeting police and officials. It was the highest death toll since several days of rioting in Urumqi in 2009 between Uighurs and members of China’s dominant Han ethnic group left nearly 200 people dead.