Book Two : Specific Provisions
Title Twelveter : War Crimes
Art. 264d
1 The penalty is a custodial sentence of not less than three years for any person who in connection with an armed conflict directs an attack :
c. against civilian objects, undefended settlements or buildings or demilitarised zones that are not military objectives ;
Attacking or bombarding towns, villages, dwellings or buildings which are undefended and which are not military objectives - IAC
Intentionally directing attacks against civilian objects - IAC
EDIT.