An international student in a graduate program at Tufts University was taken into federal custody on Tuesday outside an off-campus apartment building, according to the university’s president and an attorney representing the student.

The student, Rumeysa Ozturk, a Turkish citizen, had a valid student visa as a doctoral student at Tufts, according to a statement from her lawyer, Mahsa Khanbabai. Ms. Ozturk, who is Muslim, was heading out to break her Ramadan fast with friends Tuesday night…