Just a few weeks ago, it was announced that Adnan Syed, the subject of the first season of Serial, had been granted a new trial.

Now, in a new twist, two of his former high school classmates have formally reached out to the attorney general’s office and raised concerns about key alibi witness Asia McClain Chapman.

According to The Baltimore Sun, the former Woodlawn High School students (whose identities have not been revealed) have claimed she told them that she would “make up a lie” in order to prove that Syed was innocent.

The two gave sworn statements, in which they recalled a heated exchange with McClain in 1999 during class.

During the argument, they allege, she told them that she believed Syed was innocent of the killing of his 18-year-old ex-girlfriend Hae Min Lee, and wanted to help him.

Serial retrial update: two classmates come forward to challenge key alibi witness