URUMQI, China (AP) — Chinese authorities say that two religious extremists carried out a terror attack at a train station in far-western Xinjiang region by detonating explosives, in an apparent suicide bombing that also killed one other person and wounded 79.
The strike late Wednesday in Urumqi was the third high-profile attack in seven months blamed on Xinjiang extremists that targeted civilians. These attacks, two of them outside the region, have marked a departure from a previous pattern of primarily targeting local authorities in a long-simmering insurgency.
A 57-year-old woman being treated at the Xinjiang Traditional Chinese Medicine Hospital said she had just arrived from Sichuan province and was walking outside the station to meet her son when the explosives went off and knocked her to the ground.
"I saw I had shreds of flesh and blood in my hair and on my clothes. It was terrifying," said the woman, who would give only her surname, Peng.
The attack prompted increased security in Urumqi, and in China's capital Beijing, police held a terror response drill at the city's main railway station in the early hours of Friday.
Police based at the station arrived on the scene of a hypothetical attack within 50 seconds, with anti-terror, SWAT, criminal investigation and traffic control units all turning up within 15 minutes. Photos on the police force's microblog showed officers wearing helmets and body armor and toting submachine guns and other weapons.
The official website for Xinjiang's regional government said police identified two suspects with a history of religious extremism, including a 39-year-old man from southern Xinjiang.
It did not explicitly call Wednesday's attack in the regional capital of Urumqi a suicide bombing, but said the two men detonated explosives at a train station exit and both died on the spot.
Chinese President Xi Jinping demanded "decisive" action against terrorism after the attack, which came at awkward time for him, just as he was wrapping up a four-day tour of Xinjiang aimed at underlining the government's commitment to security in the region. It was unclear if he was still in Xinjiang when the explosions took place.
Meanwhile, Beijing criticized a U.S. State Department report issued Wednesday that said China's counterterrorism cooperation with the U.S. "remained marginal, with little reciprocity in information exchanges.
"To make irresponsible remarks about other countries and enact a double standard is of no help to international cooperation in the fight against terrorism," spokesman Qin Gang said in a statement posted on the Foreign Ministry's website.
The blasts went off about 7 p.m. just after a train had pulled into the station and as passengers streamed out onto a plaza near a bus station.
Another survivor, a man who also gave only his surname, Liu, said the blast knocked many people to the ground.
"There was chaos. Everyone was panicking," Liu said. Police and firefighters quickly arrived and Liu said the injured were taken to hospitals in ambulances and commandeered taxis.
Earlier reports in state media quoted witnesses as saying the attack also involved knifings by a group of attackers, but the regional government's brief dispatch — saying police had solved the crime — made no mention of slashings.
Tensions between Chinese and ethnic Muslim Uighurs in Xinjiang have been simmering for years, particularly since riots in 2009 in Urumqi left nearly 200 people dead, according to official figures.
Beijing blames the violence on overseas-based instigators, but has offered little evidence. Information about events in the area about 2,500 kilometers (1,550 miles) west of Beijing is tightly controlled.
Authorities said security was tightened at all transport hubs in the city, which has a mainly Han Chinese population who are distinct from Xinjiang's native Turkic Muslim Uighur ethnic group.
A suicide bombing would represent a new form of attack blamed on militants who so far have primarily targeted local officials with crude weapons, including knives and farm tools.
"It would mark a new escalation and start to hint at a worrying sophistication," said Raffaello Pantucci, a terrorism expert at the Royal United Services Institute for Defense and Security Studies in London.
"However, it is as of yet unclear whether this incident is linked to groups outside, which is what I would say would elevate it to being one of the front lines in Islamist terror in the global sense," Pantucci said.
Last October, three Uighurs rammed a vehicle into crowds near the Forbidden City gate in the heart of Beijing and then crashed the car in a fiery suicide attack, killing themselves and two tourists. Police quickly cleaned up the area and released few details, and it was not clear whether the attackers used some kind of explosives.
In March, five knife-wielding men and women believed to be Uighurs slashed at crowds indiscriminately at a railway station in southwestern China, killing 29 people.
While Beijing faults separatists for raising ethnic tensions, government critics say restrictive and discriminatory policies and practices have alienated the Uighurs. They say Han people have flooded Xinjiang and benefited from its economic growth while Uighurs have felt excluded.
China has smothered Xinjiang with additional security and imposed additional restrictions on Uighur travel rights, culture and religious practices. That, say Uighur activists, is exacerbating the resentments driving the violence.
"The Urumqi explosion again proves that forceful repression is not a solution to the problem," said Dilxat Raxit, a spokesman for the World Uyghur Congress based in Germany.
Associated Press writers Christopher Bodeen and Ian Mader in Beijing and videojournalist Aritz Parra in Urumqi contributed to this report.