Kidnappers killed one person and took an unknown number of students from a university in northwest Nigeria's restive Kaduna state, in the latest in a series of abductions at educational institutes.
Armed groups have repeatedly struck northern Nigerian schools and universities since December, abducting more than 700 students for ransom.
The government and security forces have largely been unable to stop the attacks as they struggle to contain worsening violence and criminality across the West African country.
The armed kidnappers came on foot and struck Greenfield University in Kaduna at around 8:15 pm (1915 GMT) on Tuesday, state police spokesman Mohammed Jalige said by telephone.
"One of the staff of the university was shot dead, but the number of students abducted is not yet ascertained," said Jalige, adding that police should know the number later on Wednesday.
A university staff member, speaking on condition of anonymity, said the kidnappers had seized 17 male students.
Greenfield University could not immediately be reached for comment.
US President Donald Trump said on Saturday he had been told about the concept of a deal with Iran, but was waiting for the exact wording, while warning there was still the possibility of restarting strikes on the country if Tehran misbehaves.
The Israeli military issued an urgent warning on Sunday to residents of 11 towns and villages in southern Lebanon, urging them to evacuate their homes and move at least 1,000 metres (3,300 feet) away to open areas.
Ukrainian drones attacked Russia's Baltic Sea port of Primorsk on Sunday, temporarily setting it on fire, local governor Alexander Drozdenko said on the Telegram messaging app, as Kyiv launched a wave of strikes on targets across the country.
Heavy rains that hit northeastern Brazil over the last 48 hours have killed at least six people and displaced thousands in the states of Pernambuco and Paraiba, the federal government said in a statement on Saturday.
His Highness Sheikh Mohammed bin Rashid Al Maktoum, Vice President and Prime Minister of the UAE and Ruler of Dubai, visited the site of the tunneling works now officially underway on Sunday for the Dubai Metro Blue Line.
The General Civil Aviation Authority (GCAA) has announced the full resumption of normal air navigation operations within UAE airspace and the lifting of temporary precautionary measures.