US, Dallas police killer plotted a major bomb attack

The gunman who identified as Micah Johnson former US army veteran who killed by

 police after 

killing 5police in Dallas

during the protests over police violence 

against blacks was plotting

 a major bomb attack, authority said. The incident occurred following the anger 

growing around

 America over the deaths of two black men who killed 

at the hand of police. 

Johnson was only targeting white police during his deadly rampage. 

Johnson new 

the route of Dallas march and he was well 

prepared and 

started shoot police one by one.