While there was no proof the Islamic militant group was operational in South Africa, he was concerned, he told reporters at Parliament.
“That has to be a concern for anybody and we shouldn’t be surprised if they are here,” Landers said.
“Someone who does a lot of work in Africa said to me it’s very difficult to pinpoint just who belongs to Boko Haram because they have succeeded in integrating in every community they seek to be part of.”
Boko Haram has been blamed for a series of bombings, mainly in north-east Nigeria, its suspected base of operations.
In the latest attack on Tuesday, a truck exploded, killing at least 15 people in the city of Maiduguri, a city repeatedly hit by Boko Haram members.