Five persons concert to loot a bank. Two of them, M and N, stay on in the car, with the engine running on, at the entrance of the bank. Three of them X, Y, and Z, enter the bank. X shoots the cashier, and Y and Z loot the cash. Police suddenly reaches the bank and apprehends, Y and Z but X escapes. On seeing the police enter the bank, M and N also run away in the car. Later on, all the five are arrested and charged with the offences of dacoity, looting and murder. M and N plead that they are not guilty of any of the offences, certainly not of murder and looting, as they did not participate in any of these offences. Should their plea prevail?