Which of the following is an ingredient to an offence under Section 157, Indian Penal Code?
1. That the accused harboured, received or assembled in any house or premises
2. That such house or premises were in his occupation or charge or under his control
3. Such persons were hired (or engaged or employed or were to be hired, engaged or employed) to join or become members of an unlawful assembly
4. That the accused did so knowingly