The two, a political consultant and a translator, denied allegations of fomenting protests last year.
Burkina Faso, Mali and Niger, three countries led by military governments, submit a joint bid to host the 2032 Africa Cup of Nations.
The environmental agency has warned people to avoid going near the substance as it could pose a health risk.
Ipswich Town sign Morocco defender Issa Diop from Fulham for an undisclosed fee.
The seizure follows a long-running investigation into drug-trafficking networks, police say.
Ndodana Mkhanyisi Tshuma, accused of killing his wife and two daughters, is in custody in South Africa.
The health worker was evacuated to the UK from the DR Congo after being potentially exposed to the virus.
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