He tweeted this message after he was done:
There was an explosion by the finish line about 5 minutes after I finished- I'm ok but I'm sure there are many hurt.
Last report there were 2 fatalities and over 20 people injured by the explosions. Like Donnie said in a tweet "Please #PrayforBoston and all those impacted by this."
On a lighter note: Joey finished the race in 3 hours, 57 minutes and 6 seconds.
Here are a couple photos he shared: