7 dead in \'terror\' gun attack on US Sikh temple

US investigators on Monday probed a vicious attack on worshippers at a Sikh temple in Wisconsin in which a gunman killed at least six people before he was shot dead by police. Three men, including a member of a police unit called to the scene, were reported to be in a critical condition with gunshot wounds. The killings were condemned by US President Barack Obama and Indian Prime Minister Manmohan Singh, who said he was \"deeply shocked and saddened\". The Federal Bureau of Investigation said the probe into the shooting in Oak Creek, Wisconsin, was in its early stages and that no definitive conclusions could yet be drawn. \"While the FBI is investigating whether this matter might be an act of domestic terrorism, no motive has been determined at this time,\" Special Agent in Charge Teresa Carlson said in a statement. Officials speaking on condition of anonymity said tattoos on the body of the slain gunman and certain biographical details have led the FBI to look at the possibility of domestic terrorism, but more time was needed to make a final determination. The attack was the second massacre to shock the United States in under three weeks and will boost pressure on Obama and his rival Mitt Romney to address gun control before the November 6 presidential election. Oak Creek Police Chief John Edwards told reporters that officers had responded to a 911 call and raced to the temple, where one of them was \"ambushed\" and shot several times before a colleague took down the gunman. The suspect died, as did six others he had shot in and near the temple. Three men, including the wounded officer, were taken to a Milwaukee hospital, where a medic said they were in \"critical condition.\" Witnesses described a bloody scene of confusion and terror as the gunman strode into the temple and opened fire as people gathered for Sunday services. Japal Singh, 29, spoke to several fellow parishioners about what happened and said that while people were still confused, some things were now clear. A man who dropped his father off at the temple, known to Sikhs as a \"gurudwara,\" said he saw the shooter -- described as a tall white man with a bald head -- kill two people in the parking lot. \"Then he went down inside the temple and then went into the room where the holy scripture is kept and basically shot more people there, multiple people there,\" said Singh, a combat medic in the US Army reserve. Police did not name the shooter, although they had clearly identified him as local and federal officers soon evacuated three blocks of housing in Cudahy, a suburb just north of Oak Creek, while they sealed off his home. An AFP reporter in Cudahy saw heavily armed officers mounted in the basket on the ladder of a fire truck observing a house from above, while more police cordoned off the neighborhood as a precaution. Dozens of members of the Sikh community descended on the area after reports of the shooting and were held back behind a police cordon, anxiously scanning their cell phones for news of friends and relatives in the temple. \"Our priest, he\'s dead. One of my friends\' grandfathers, he\'s dead. It\'s a very close-knit community. No matter who\'s hurt, we\'re all family,\" Harinder Kaur, a 22-year-old student, told AFP. Factory worker Navreet Raman, 42, said: \"It\'s terrorizing. It\'s our worship place. If church is not a safe place, what is? Nothing is safe.\" President Obama said he and First Lady Michelle Obama had been \"deeply saddened\" to learn of the shooting, and Romney sent his condolences.  \"As we mourn this loss which took place at a house of worship, we are reminded how much our country has been enriched by Sikhs, who are a part of our broader American family,\" Obama said in a statement. In New Delhi, Prime Minister Manmohan Singh, himself a Sikh, said: \"That this senseless act of violence should be targeted at a place of religious worship is particularly painful.\" The president of the temple, Satwant Kaleka, was shot and was taken to a hospital, according to The Milwaukee Journal Sentinel, which said the large place of worship had been founded in 1999. According to religious tradition, Sikh Indians wear turbans to cover their uncut hair and sport long beards. There are reportedly between 500,000 and 700,000 Sikhs now living in the United States. In the United States they have often been mistaken for Muslims and have been targeted by anti-Islam activists, particularly after the September 11, 2001 attacks on the United States. Sapreet Kaur, executive director of the Sikh Coalition, which represents the community in the United States, said police should be allowed to investigate but that he suspected a hate crime had taken place. \"There have been multiple hate crime shootings within the Sikh community in recent years and the natural impulse of our community is to unfortunately assume the same in this case,\" he said. Sunday\'s shooting also bore some similarities to a March 2005 incident in nearby Brookfield, Wisconsin that saw a gunman kill seven worshippers at a church service at a hotel, before turning the gun on himself. Last month, a gunman burst into a movie theater showing the new Batman film in Aurora, a suburb of Denver, Colorado, and opened fire, killing 12 people and wounding dozens more.