Reporters Wesley Lowery of the Washington Post and Ryan J. Reilly of the Huffington Post were working inside a McDonald's in Ferguson, Mo., on Wednesday when officers arrived and arrested the two journalists.
Information on the status of the two men was not immediately available.
The two reporters later confirmed on Twitter they were taken into custody and released.
The Ferguson police chief told a Los Angeles Times reporter that St. Louis County officials were handling operations.
Lowery detailed the arrest and a use of force by at least one officer against him.
As he was arrested, he said he saw a black man in the back of a police truck who was refused paramedics.
He was not given the names of any of the officers involved.
The treatment they received from police was far better than that of others in Ferguson, Lowery noted.
Lowery captured video of his arrest Wednesday inside the McDonald's.
Marty Baron, executive editor of the Washington Post, released a statement condemning the arrest of Lowery, saying "there was absolutely no justification for his arrest."
Claudia Koerner is a national reporter for BuzzFeed News and is based in Los Angeles.
Contact Claudia Koerner at firstname.lastname@example.org.
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