Amazing story, but the source had been on Twitter, posting there.
From The Times:
Andrew Kitzenburg, 29, said he looked out of this third floor window to see two young men of slight build in jackets shooting at dozens of police officers from behind a black Mercedes SUV. The officers and the men were 70 yards apart, he said, and engaged in “constant gunfire.”A police SUV “drove towards the shooters,” he said, and was shot at until it was severely damaged. It rolled out of control, Mr. Kitzenberg said, and crashed into two cars in his driveway.The two shooters, he said, had a large and unwieldy bomb. “They lit it, still in the middle of the gunfire, and threw it. But it went 20 yards at most.” It exploded, he said, and one of the two men ran towards the gathered police officers. He was tackled, but it was not clear if he was shot, Mr. Kitzenberg said.