NAIROBI, Kenya (AP) — Nine students accused of planning and executing an arson attack that killed 16 girls at a school in central Kenya appeared in court on Tuesday.

Investigators asked for more time to probe the deadly fire.

The High Court in the town of Naivasha, 90 kilometers (55 miles) west of the capital, Nairobi, said it will issue a ruling on Wednesday on whether the girls could be detained for a month pending investigations.