The group, most of whom were students, arrived shortly after 0630 GMT on a chartered flight from Romania’s capital Bucharest, one of the hubs from where African governments are scrambling to extract stranded citizens.

Nigerian foreign ministry official Gabriel Aduda tweeted pictures of the group inside an aircraft late on Thursday, saying “415 Nigerians mostly students fleeing the Ukraine-Russian war from Bucharest.”

Many looked tired but relieved that their journey was over.

“I’m very happy to be back home, thank you, Nigeria!” one young woman said as she walked off the tarmac and into the terminal in Abuja.

Minister of Foreign Affairs Geoffrey Onyeama said there were about 5,600 Nigerian students in Ukraine and an estimated 8,000 Nigerian citizens in the country before the war.

On Monday he said an estimated 1,000 citizens were ready for pickup from Romania, 200 others in Slovakia, and 250 both in Hungary and Poland.

A million refugees have fled Ukraine so far, the UN said Thursday, warning that unless the onslaught ended immediately, millions more were likely to flee.

Ghana on Tuesday became the first African country to return its citizens, flying home 17 out of 500 stranded students.