Police have arrested a Mississippi man in connection with letters testing positive for ricin sent to Sen. Roger Wicker and President Obama. The third fatality from Monday's Boston Marathon bombing has been identified as Chinese citizen and 23 year old Boston U grad student Lu Lingzi. The FBI confirms no arrests have been made in connection with the Boston Marathon bombing despite a erroneous report from CNN earlier on Wednesday. Margaret Thatcher's funeral was held in London Wednesday with nearly 2,000 mourners and delegations from countries around the world. The test launch of the Antares rocket has been delayed due to an umbilical cable malfunction, pushing back the launch of Orbital Space Science's rocket until Friday.