A bomb exploded early Thursday at the apartment of a well-known TV journalist, causing severe damage, but injuring no one, police said.
The bomb was placed in front of the door of Nova TV reporter Vasil Ivanov's apartment in a residential building in the capital, Sofia. The powerful explosion occurred around 3 a.m., police said.
Ivanov was not at home at the time of the blast. His mother and sister were not injured.
Ivanov, who is known for his investigative reports on corruption and abuse of power, said the blast was connected with his work.
"I can imagine which of my reports has provoked this attack," Ivanov said, but declined to elaborate, citing the ongoing investigation.
"My mother and sister are scared," he said. "The blast could have killed about 20 people living on my apartment's floor."
Lawmakers summoned Interior Minister Rumen Petkov to report on the case.
Ivanov's latest report revealed cases of abuse of prisoners by other convicts in the Sofia prison, in which people were sexually abused and forced to act like dogs on a leash in front of a selected "public" of fellow prisoners. Ivanov's investigation alleged this had happened with the knowledge and sanction of prison officials.
In another report, Ivanov exposed a fraud scheme, in which a suspected of corruption notary registered car and estate sales without checking the seller's identity, the AP reports.
After it turned out that Deputy Prime Minister Andrei Belousov included the Fonbet betting company in the list of backbone enterprises that can count on state support, everyone started talking about these bookmakers.