Tufts University doctoral student Rümeysa Öztürk was released from a Louisiana detention center Friday, six weeks after masked federal agents took her into custody amid the Trump administration’s effort to deport noncitizens who have protested against the war in Gaza.

Nearly two months after she was arrested on the streets of Somerville and sent to Louisiana to await deportation, Rümeysa Öztürk returned to Massachusetts on Saturday night.

A federal judge on Friday ordered the immediate release of Rümeysa Öztürk, a Turkish Ph.D. student at Tufts University who had been held for six weeks in an immigration detention center, ruling that her arrest and continued confinement were unlawful and raised serious constitutional concerns.