Update: Police say 12 killed in shooting at French satirical newspaper, last tweet aimed at ISIS leader

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PARIS — At least 12 people were killed in a shooting inside the French satirical newspaper Charlie Hebdo on Wednesday, the Paris prosecutor’s office said, according to CNN affiliate BFMTV.

French President Francois Hollande and other senior government officials are due to arrive at the scene of the shooting shortly, BFMTV said.

At least three police officers were injured, police union spokesman Luc Poignant told BFMTV.

Two heavily armed men entered the Charlie Hebdo office and opened fire inside the building, Poignant said.

The Paris mayor’s office said at least six people were wounded, according to BFMTV.

The magazine’s office was burned three years ago in response to its publication of cartoons of the Prophet Mohammed.

In November 2011, Charlie Hebdo’s offices caught fire the day it was due to publish a cover making fun of Islamic law.

The most recent tweet from Charlie Hebdo‘s was a cartoon depicting Abu Bakr al-Baghdadi, the leader of the Islamic State (ISIS).

The tweet, aimed at al-Baghdadi, reads, “Best wishes, by the way.”

The French government raised the country’s security alert system to its highest level  following the deadly attack, according to French media.