The US military veteran who fatally shot five Dallas police officers in a racially motivated attack last week asked negotiators how many people he had shot and told them he wanted to kill more, the city's police chief said on Monday.
Explosives found at the home of gunman Micah Johnson suggested he had been plotting a larger assault, said authorities, who were still trying to understand a message he wrote in his own blood on a wall before being killed by a bomb-equipped robot sent in by the police.
"We knew through negotiations this was the suspect because he was asking us how many did he get and he told us how many more he wanted to kill," Dallas Police Chief David Brown told reporters on Monday.
The attack on Thursday night came at the end of a demonstration over police shootings that had been prompted by incidents earlier in the week in which police in Baton Rouge, Louisiana, and St. Paul, Minnesota, killed two black men.
Johnson, a 25-year-old African-American, told police negotiators during an hours-long standoff that he had been angered by those deaths and had wanted to "kill white people."
The deaths in Baton Rouge and St. Paul were the latest in a series of high-profile...
