Police say they’ve killed one of two Boston Marathon suspects

A developing story as of this moment. Police in Massachusetts say they have killed one of the two Boston Marathon bombing suspects in a standoff in the city of Watertown. The other suspect is still at large. The standoff arose from a robbery at a 7/11 in Cambridge. Here is more from the New York Times:

It seemed early on Friday as though it was the first in a series of violent crimes perpetrated by the two young men in the Boston area this week. Police confirmed that, at around 10:30 p.m. there had been a robbery at a 7/11 store in Central Square, Cambridge, apparently by the white-hatted suspect. Shortly afterward, a campus police officer at the Massachusetts Institute of Technology was shot and killed while responding to a suspicious incident. Police chased the two suspects, apparently in a black Mercedes SUV, to Watertown, where two residents of Laurel Street said they heard what sounded like firecrackers going off shortly before midnight. When they looked out of their windows, they saw the two young men taking cover behind the black Mercedes, in a shootout with dozens of police about 70 yards away. A transit police officer was shot, said a police spokesman, Dave Procopio, and was in serious condition.

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A Watertown resident, Andrew Kitzenberg, 29, said he looked out his third-floor window to see two young men of slight build in jackets engaged in “constant gunfire” with police officers. 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, unwieldy bomb that he said looked “like a pressure cooker.” “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 toward the gathered police officers. He was tackled, but it was not clear if he was shot, Mr. Kitzenberg said. Interesting comment from Boston Police Commissioner Edward Davis about the suspect who remains at large: "We believe this to be a terrorist. We believe this to be a man who’s come here to kill people. We need to get him in custody." We'll keep an eye on this.