Update: 9:55 p.m. AP: Police say the 19-year-old suspect in the Boston Marathon bombings exchanged gunfire with law enforcement for an hour while holed up in a boat before being captured. Boston Police Commissioner Ed Davis says the suspect, Dzhokhar Tsarnaev, was hospitalized late Friday in serious condition. Update 8:59 …

Updates throughout day: One suspect in the Boston Marathon bombings is dead and a massive manhunt is underway for another. Authorities have shut down mass transportation and tell residents in Boston suburbs to "stay inside."

President Barack Obama will deliver a statement on the Boston Marathon explosions from the White House Tuesday morning. Watch the livestream here.

Two explosions went off near the finish line at the Boston Marathon; reports say 3 dead and more than 140 injured in the blasts.

The 5th District Court of Appeals overturned two of Casey Anthony's convictions. The court agreed with Anthony's attorneys that the two charges constituted double jeopardy.