Nigeria's army has rescued 33 people who were abducted while traveling in Zamfara state, in the country's north west
Trump instructed the Pentagon to "prepare for possible action."
The first attack was carried out by a woman, a local official said.
Over 100 students were kidnapped in Nigeria’s Kaduna State.
It happened in complete darkness and authorities weren't alerted for hours.
The State Department is investigating the attack.