The 'Blade Runner' is currently on bail and local media reports suggest he requested the memorial service to allow him to grieve at his partner's death.
Pistorius' family members will attend the private Pretoria service which will take place at the house of Arnold Pistorius, Oscar's uncle.
The South African media have been asked to respect the Pistorius family's privacy.
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Millwall fans who caused problems at the match against Barnsley could face lifetime bans, the club said.
Counter-terrorism forces, backed by Shi'ite militias on the ground and coalition airstrikes, are moving into the city on several fronts.