 Richard also failed to open any investigation into the matter, which would have been in his interest if he was not responsible for the deaths of his nephews.Richard was away from court on a progression through the Yorkist heartlands at the time the princes disappeared; if they died at this time, he would have been unable to murder them in person.They were under guard in the Tower of London, which was controlled by his men, and access to them was strictly limited by his instructions.