No incidents and additional arrests are reported overnight , authorities say . Police said a total of 245 people had been arrested around the city Thursday . - The first of two explosions at the Boston Marathon is heard by witnesses in a nearby neighborhood. Fifty more were arrested in Los Angeles incidents , an officer says .
No incidents and additional arrests are reported overnight , authorities say . - The first of two explosions at the Boston Marathon is heard by witnesses in a nearby neighborhood. Fifty more were arrested in Los Angeles incidents , an officer says .