Iran Press/Africa: The gunmen attacked the Federal College of Forestry Mechanization in Kaduna state in the northwestern part of the country, where gang violence is commonplace, and schools have been targeted before.
Officials said about 30 students at the school are unaccounted for, but nearly 200 other children and staff were protected. It wasn't immediately clear if the abducted children are boys, girls, or both.
No militant group immediately claimed responsibility for the kidnappings. Authorities described them as a group of armed bandits.
A few students were hurt during the attack, the fourth mass abduction in Nigeria since December.
Almost 300 schoolgirls were taken earlier this month from a public-run school in the remote village of Jangebe and later released; more than 40 students were abducted in Kagara in February.
Nigerian militant group Boko Haram kidnapped 300 boys in Katsina state in December. The Nigerian military ultimately rescued those boys.
Boko Haram was also behind the "Chibok Girls" abduction in 2014, many of whom remain missing today. In January, the parents of some of the girls said they had escaped from the militant group recently.
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