He and his daughter were both poisoned with a nerve agent according to the latest I've read. The Russians don't allow you to live outside of the block for too long.
International Level: Politics 101 / Political Participation: 2 0.2%
Former Russian spy Sergei Skripal discharged from English hospital after poisoning. Skripal, 66, and his daughter Yulia, 33, were found unresponsive on a bench in Salisbury, a city in southern England, on March 4. The two were taken to Salisbury District Hospital in critical condition. The younger Skripal already was discharged. Ref. USAToday.