The Greek police on Saturday were looking for the people responsible for detonating makeshift bombs at the homes of five journalists in Athens, the latest in a series of actions taken against reporters in Greece that have raised questions about a deteriorating climate for media freedom.

An anarchist group calling itself Lovers of Lawlessness claimed responsibility for Friday’s attacks, citing coverage of the financial crisis that the group denounced as sympathetic to the austerity programs being imposed by the Greek government and its foreign lenders.

The news media are the “main managers of the oppressing state designs, manipulating society accordingly,” the group said in a statement posted to the Internet.

Reporters Without Borders condemned the bombings, in which explosives tied to gas canisters caused minor damage at the homes of the editor of the Athens News Agency, Antonis Skylakos, and two broadcasters, Giorgos Oikonomeas and Antonis Liaros, from private television stations. Petros Karsiotis, a crime reporter, and Christos Konstas, a former journalist who is now a spokesman for the government agency in charge of privatizing Greek assets, were also targeted. No injuries were reported.