"The Dallas Police Department received an anonymous threat against law enforcement across the city and has taken precautionary measures" to heighten security, Dallas police said in an emailed statement. Dallas police headquarters and surrounding blocks were cordoned off and SWAT teams were deployed on Saturday after authorities received an anonymous threat against officers across the city, but a search for a "suspicious person" turned up no one, officials said. The incident occurred as the city remained tense following Thursday night's fatal shootings of five Dallas police officers by a former US Army reservist. Officials said Johnson had embraced militant black nationalism and expressed anger over shootings by police as well as a desire to "kill white people, especially white officers." The department said there was no formal lockdown at the headquarters despite earlier media reports characterising the incident that way.

Source: dna July 10, 2016 02:03 UTC