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| Version 1 | Version 2 |
|---|---|
| Dallas shooting: High alert over 'new security threat' | Dallas shooting: High alert over 'new security threat' |
| (35 minutes later) | |
| Dallas police say they have heightened security at their headquarters after receiving an anonymous threat, two days after the deadly shooting in the city. | Dallas police say they have heightened security at their headquarters after receiving an anonymous threat, two days after the deadly shooting in the city. |
| SWAT officers were deployed at the main building, in effect placing it under lockdown, local media say. | SWAT officers were deployed at the main building, in effect placing it under lockdown, local media say. |
| On Thursday, five white police officers were shot dead by a black man, Micah Johnson, during a protest rally. | On Thursday, five white police officers were shot dead by a black man, Micah Johnson, during a protest rally. |
| The march was against the killing of black men by police. Two deaths this week have led to nationwide protests. | The march was against the killing of black men by police. Two deaths this week have led to nationwide protests. |
| In a statement, the police said on Saturday: "The Dallas Police Department received an anonymous threat against law enforcement across the city and has taken precautionary measures to heightened security." | In a statement, the police said on Saturday: "The Dallas Police Department received an anonymous threat against law enforcement across the city and has taken precautionary measures to heightened security." |
| An armoured vehicle was moved close to the main HQ in central Dallas and heavily armed officers were seen nearby, according to the Associated Press news agency. | An armoured vehicle was moved close to the main HQ in central Dallas and heavily armed officers were seen nearby, according to the Associated Press news agency. |
| But it added that members of the public were still able to walk about freely around the building. | But it added that members of the public were still able to walk about freely around the building. |
| The police asked media to stop all live feeds around HQ "for the safety of our officers", the BBC's James Cook reports. | |
| The police have so far not commented on the media reports that the HQ was under lockdown. | |
| The shooting happened late on Thursday during the protest march. | The shooting happened late on Thursday during the protest march. |
| Johnson, who was himself killed during the assault, supported black militant groups who encouraged violence against police. | Johnson, who was himself killed during the assault, supported black militant groups who encouraged violence against police. |
| Dallas police chief David Brown said Johnson had told a negotiator that he had wanted to kill white people, especially white police officers, because he was angry about the recent shootings of black men by police. | Dallas police chief David Brown said Johnson had told a negotiator that he had wanted to kill white people, especially white police officers, because he was angry about the recent shootings of black men by police. |
| The attack came after the police killings of Philando Castile in Minnesota and Alton Sterling in Louisiana. | The attack came after the police killings of Philando Castile in Minnesota and Alton Sterling in Louisiana. |
| 'Unity shown' | |
| Earlier on Saturday, President Barack Obama said the US was "not as divided as some have suggested" in the wake of the shootings involving African-Americans. | |
| He said Americans of "all races, all backgrounds", including many of those who were protesting, were outraged by the Dallas killings. | |
| As well as the five police officers killed, another seven were injured on Thursday. Two civilians were also hurt. | |
| Johnson, 25, who officials say acted alone, was killed by remotely detonated explosives that were sent into a car park where he had taken refuge after the shootings. | |
| He was a member of the US Army Reserve from 2009 to 2015 who had served in Afghanistan. | |
| Bomb-making material, rifles and a combat journal were found his home in the Dallas suburb of Mesquite. | |
| A number of gun attacks involving police officers and civilians have occurred in other parts of the US in the aftermath of the deaths in Minnesota and Louisiana. | |
| Leaders of the Black Lives Matter organisation have condemned the Dallas killings but say planned marches, including a "Weekend of Rage" in Philadelphia, will go ahead. |