BULGARIA – CRIMINAL CODE
SPECIAL PART
Chapter Fourteen - CRIMES AGAINST PEACE AND HUMANITY
Section II - Crimes Against the Laws and Customs of Waging War
Article 412
A person who in violation of the rules of international law for waging war:
a) perpetrates or orders with regard to the civil population murders, tortures, inhuman treatment, including biological experiments to be perpetrated, causes or orders grave sufferings, mutilation or other serious impairments of health to be inflicted;
Biological experiments - IAC
Grave breaches - IAC
Inhuman treatment - IAC
Intentionally directing attacks against individual civilians not taking part in hostilities - IAC
Intentionally directing attacks against the civilian population - IAC
Mutilation - IAC
Torture - IAC
Wilful killing - IAC
Wilfully causing great suffering - IAC
Wilfully causing serious injury to health - IAC
EDIT.