The governor of Guerrero, the Mexican state where 43 students vanished last month in the city of Iguala, has said he is stepping aside from his position, in a move he hoped would help the investigation into the disappearances.
A physician with Doctors Without Borders who returned from West Africa recently has tested positive for Ebola at a New York City hospital, the city's mayor confirmed.
Authorities say 32-year-old Michael Zehaf-Bibeau acted alone during Ottawa attack, and was planning to travel to Syria.
Mexico has ordered the arrest of the mayor of the southern city of Iguala, along with his wife and an aide, charging they masterminded last month's attack that left six students dead and 43 missing.
A man who jumped over the White House fence has been apprehended by Secret Service agents, a spokesperson for the US agency has said, in the second such incident to happen in a few weeks.
Canada's prime minister has said he will speed up plans to bolster laws on "surveillance and arrest" after a deadly attack on parliament in Ottawa he said was designed to instill fear and panic.
A young Canadian convert to Islam who killed a soldier in a hit-and-run incident had been on the radar of federal investigators, who had seized his passport, according to federal authorities.
Four former employees of the US security company Blackwater have been convicted of almost every charge related to the shootings of more than 30 unarmed Iraqi civilians in Baghdad seven years ago.
A gunman armed with a rifle has shot and killed a Canadian soldier guarding Ottawa's war memorial, before being pursued by police into the national parliament building and shot dead himself.
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