A burned copy of a Hamburger Morgenpost newspaper is pictured among other documents in front of a building of German newspaper Hamburger Morgenpost in Hamburg January 11, 2015. The building of German newspaper Hamburger Morgenpost was the target of an ars
A burned copy of a Hamburger Morgenpost newspaper is pictured among other documents in front of a building of German newspaper Hamburger Morgenpost in Hamburg January 11, 2015. The building of German newspaper Hamburger Morgenpost was the target of an arson attack and two suspects were arrested, police said on Sunday. Like many other German newspapers, Hamburger Morgenpost has printed cartoons of French satire magazine Charlie Hebdo after the deadly attack on Wednesday in Paris. A police spokeswoman said that an incendiary device was thrown at the newspaper building in the night and documents were burned inside. REUTERS/Fabian Bimmer REUTERS/Fabian Bimmer

Hamburger Morgenpost, a daily German newspaper published in Hamburg, had been targeted in a firebomb after it reprinted three cartoons of the Prophet Mohammed from the satirical magazine Charlie Hebdo.

Two rooms on the lower floors of the offices of Hamburger Morgenpost caught fire early on Sunday morning at about 0120 GMT after suspects threw several rocks and a burning object thrown through the window from a courtyard of the building. The Guardian, citing German news agency DPA, said the attack apparently targeted the newspaper's archive room. An unidentified police spokesman told AFP the rooms were damaged, but firemen were still able to put the fire out quickly.

The police added two people have been detained and an investigation has begun. However, it didn't want to confirm if the firebomb attack had any connection to the publication of the Charlie Hebdo cartoons by the newspaper. No one was hurt in the early morning attack.

Hamburger Morgenpost, as a sign of solidarity to fellow journalists and in defence of freedom of speech, had carried three Charlie Hebdo cartoons on its front page immediately after the Paris massacre. Its accompanying headline was "This much freedom must be possible!"

Photos showing bundles of fire-damaged newspapers and files piled up outside the building were shown on the online edition of the Hamburger Morgenpost. "Thick smoke is still hanging in the air, the police are looking for clues," the newspaper said.

Firemen had ruled Hamburger Morgenpost's editorial team should be still able to continue working in the building. The damage was relatively minor, DPA reported, quoting an unidentified police spokeswoman.

Also on Sunday, staff working for French-language daily Le Soir were evacuated an anonymous caller issued a bomb threat against the newspaper. "An anonymous caller made threats against the editorial side of the paper, after which it was decided to evacuate the building," News Limited Copyright cited a report by the Belga news agency.

Le Soir journalist Martine Dubuisson reportedly tweeted that the caller told journalists the bomb was "going to go off in your newsroom." Police had cordoned off all roads leading to the newspaper's offices. The AFP, citing Bild am Sonntag newspaper, said the Paris attack against Charlie Hebdo on Wednesday, and Sunday's attacks against Hamburger Morgenpost and Le Soir could mean the start of a wave of attacks in Europe.