Mr Rudakubana, from the village of Banks in Lancashire, has already been charged with the murders of Bebe King, six, Elsie Dot Stancombe, seven, and Alice da Silva Aguiar, nine, after the attacks in Southport on 29 July.
He also faces charges on ten counts of attempted murder and possession of a knife after the stabbings.
Eight of the alleged attempted murders concern attacks on children who cannot be named for legal reasons, while the final two allegations concern alleged attacks on yoga teacher Leanne Lucas and another adult, John Hayes.
