red–hand·ed 
/ˈrɛdˈhændəd/ adverb
/ˈrɛdˈhændəd/ adverb : while doing something wrong or illegal
▪ The robbers were caught red-handed by the police. [=the robbers were caught while they were stealing]
▪ The robbers were caught red-handed by the police. [=the robbers were caught while they were stealing]
