India, Jan. 12 -- Transcripts of videos left by the suspect in last month's Brown University shooting continue to offer insight into the case, even as key questions, including the motive behind the attacks, remain unanswered.

The videos were recovered from an electronic device found near the body of Claudio Neves Valente, who authorities say carried out the December shootings before dying by suicide.

In the recordings, Valente acknowledges responsibility for the shootings that killed two Brown University students and MIT professor Nuno FG Loureiro. He also refers to being injured during one of the attacks, stating that a shell round struck his eye, a detail CNN reported had not been highlighted publicly during the manhunt.

Valente sugg...