A performer at Kendrick Lamar’s Super Bowl halftime show unfurled a flag emblazoned with the words Sudan and Gaza in a protest over the two wars that are roiling the Middle East. Security at the stadium detained the performer shortly after waving the flag atop a car used as a prop in the performance.

No one involved with the production was aware of the individual’s intent,” the N.F.L. said in a statement about the protest during Kendrick Lamar’s show.

Roc Nation, the entertainment company which produced the halftime show, said the act “was neither planned nor part of the production and was never in any rehearsal.”