London ? Police identified the man who was chased down in a subway and shot to death by plainclothes officers as a Brazilian and expressed regret Saturday for his death, saying they no longer believed he was tied to the recent terror bombings.

Friday’s shooting before horrified commuters prompted criticism of police for overreacting and expressions of fear that Asians and Muslims would be targeted by a “trigger-happy culture” after two well-coordinated attacks in two weeks.

The man shot at the Stockwell subway station was identified as Jean Charles de Menezes, 27. Witnesses said he was wearing a heavy, padded coat when plainclothes police chased him into a subway car, pinned him to the ground and shot him in the head and torso.

Hours after the shooting, Police Commissioner Ian Blair said the victim was “directly linked” to the investigations into attacks Thursday and July 7. In the latter, suicide bombings on trains and a bus killed 56 people, including four attackers.

Police initially said the victim attracted police attention because he left a house that was under surveillance after Thursday’s bungled bombings, in which devices planted on three subway trains and a double-decker bus failed to detonate properly. Stockwell is near Oval station, one of those targeted.

“He was then followed by surveillance officers to the station. His clothing and his behavior at the station added to their suspicions,” police said Friday.

But Saturday, a police official said on condition of anonymity that Menezes was “not believed to be connected in any way to any of the London bombings.” The official requested anonymity because no official announcement had been made.

“For somebody to lose their life in such circumstances is a tragedy and one that the Metropolitan Police Service regrets,” a spokesman said on condition of anonymity, which is police policy.

However, police did not explain what went wrong. Citing a need to keep the investigation under wraps, the authorities refused to give any indication whether Menezes had done anything wrong at all.

In Brazil, the Foreign Ministry said it was “shocked and perplexed” by the death of Menezes, whom it did not name but described as “apparently the victim of a lamentable mistake.”

The ministry said it expected British authorities to explain the circumstances of the shooting, and Foreign Minister Celso Amorim would try to arrange a meeting with British Foreign Secretary Jack Straw during a visit to London.

Brazilian media reported that Menezes was an electrician who had been legally living and working in England for the past three years.

“He spoke English very well, and had permission to study and work there,” Menezes’ cousin Maria Alves told the O Globo Online Web site from her home in Sao Paulo. Menezes was originally from the city of Gonzaga in the southeastern state of Minas Gerais.

Mayor Ken Livingstone said the killing was a “human tragedy” that was a consequence of the attacks.

“The police acted to do what they believed necessary to protect the lives of the public,” he said. “This tragedy has added another victim to the toll of deaths for which the terrorists bear responsibility.”

Livingstone drew a hard line before the mistake became clear, declaring that anyone believed to be a suicide bomber faced a “shoot-to-kill policy.”

The shooting was an indication of the nervousness and anxiety around the city of about 8 million people. A police watchdog organization, the Independent Police Complaints Commission, said it would investigate the shooting but make sure not to hinder the bombings probe.