A teen charged with killing three girls and wounding ten other people in a stabbing rampage at a Taylor Swift-themed dance class in England refused to speak when he appeared in court Wednesday.

He faced new charges of possessing a deadly poison and a terror charge linked to possessing an al-Qaida manual.

Axel Rudakubana, 18, who appeared in Westminster Magistrates’ Court by video link from Belmarsh prison in south London, pulled the top of his gray sweatsuit over his nose and wouldn’t confirm his name or respond to other questions.