Boston Public Library

A centuries-old map compiled by French explorer Samuel de Champlain and believed to be among dozens stolen more than a decade ago from the Boston Public Library has been recovered, library officials said Friday.

The explosives that killed three and wounded more than 170 at the Boston Marathon were made of pressure cookers packed with metal and ball bearings, a person briefed on the investigation said Tuesday. President Barack Obama declared the bombings an act of terrorism.

A centuries-old map compiled by French explorer Samuel de Champlain and believed to be among dozens stolen more than a decade ago from the Boston Public Library has been recovered, library officials said Friday.

The explosives that killed three and wounded more than 170 at the Boston Marathon were made of pressure cookers packed with metal and ball bearings, a person briefed on the investigation said Tuesday. President Barack Obama declared the bombings an act of terrorism.