At least 36 people killed in the Mexico City headquarters of Pemex oil company explosion 

In Mexico, at least 36 people were killed in the offices of state-oil company Pemex because of an explosion adjacent to the building. More than 100 people were injured, according to Reuters.
Mexican Atty. General Jesus Murillo said it is still too early to say if last Thursday’s explosion was a result of an attack, an accident or negligence. Mexican President Enrique Peña Nieto urged people not to speculate, according to the Associated Press.
The explosion happened at 3:45 p.m. A Pemex secretary, who was on the second floor of the 14-story administrative building, said she heard two loud explosions and a third smaller one.

Fidel Castro appeared in public for the first time in months to vote in Cuba’s parliamentary elections
Last Sunday, former Cuban President Fidel Castro visited a polling place in Havana to vote in Cuba’s parliamentary elections. This is the first time the 86-year-old has been seen in months.
Castro reportedly spent more than an hour talking to other voters and the media. BBC correspondent Sarah Rainsford said Castro spoke with a “faint, weak voice.”
Castro spoke about reforming the economy, Latin American integration, Venezuelan President Hugo Chavez and other matters, according to Reuters.
This was the ex-leader’s first extended public appearance since 2010. According to Reuters, Castro had voted from his home in three previous elections since 2006. Illness compelled him to hand power to his younger brother Raul Castro two years later.

Horsemeat found in Burger King patties, and halal prison food contained pork DNA in the U.K.
In U.K. and Ireland, Burger King acknowledged some of its U.K. patties included horse and pork traces. The chain, however, said none of the affected products ever reached consumers, according to The Los Angeles Times.
Their finding came from an investigation that traced the patties from a single Irish supplier called Silvercrest to an unapproved Polish firm. Although Silvercrest’s “beef” is said to have never been sold at Burger King, the British grocery giant Tesco sold a Silvercrest patty that was 29 percent horsemeat, according to NPR.

According to the LA Times, Tesco apologized to customers, withdrew the items from sale and offered a full refund earlier this month. Both chains dropped Silvercrest as their provider.
In a U.K. prison, another food test found pork DNA in pies and pastries described as “halal,” a term used to designate food seen as permissible according to the Islam culture. The meat is said to have come from a different food processor—a properly certified supplier of halal food.
The Ministry of Justice, which commissioned tests after Silvercrest’s incident with Tesco, said the products have been withdrawn, according to BBC U.K.