The reporters were held by Niger authorities over a story on refugees.
An Aljazeera correspondent, Yvonne Ndege, and her team have been released from a Niger jail after being held by authorities since Saturday.
Yvonne Ndege went with her crew – the camera operator, Romuald Luyindula; producer Mohammed Abubakar; and driver Rabiu Abdullahi; to Zinder in Southern Niger to get materials for a story on refugees.
They were detained by the Niger authorities at around 9:00 GMT on Saturday, questioned, and asked to hand over the materials.
“The four-person team was released late on Monday evening without charge to make way back to the border into Nigeria,” Kevin Kriedmann, a spokesperson of Aljazeera disclosed in a press release early Tuesday.
“Al Jazeera would like to thank everyone who was involved in trying to secure the release and safe return of their staff,” Mr. Kriedmann added.