A sense of compassion and strength has brought communities together in the aftermath of Monday’s attacks on Boston

Two men, dressed in dark clothes, and wearing baseball caps were described as “persons of interest" by investigators

Hopes for break in case as man seen in footage dropping bag at site of blasts that killed three

Letter sent to President Obama shown to have contained poisonous ricin

US officials deny earlier reports of arrest in connection with the investigation

Father of 8-year-old killed in Boston attack asks for prayers

Now eight-year-old dead, sister maimed and Irish-American mother brain damaged