Kidnappers in Kajuru, Kaduna state killed a British woman, a man, and abducted three others on Sunday.
The woman travelled from Lagos as a tourist and was attending a party before the incident happened, police said.
The British High Commission named the woman as Faye Mooney and said it was aware of the incident that happened late on Friday but added it would not speculate on the motive or nature of attack.
There has been no claim of responsibility for the incident and the kidnappers have yet to be identified, police said.
Mooney was employed in Nigeria by a non-governmental organisation called Mercy Corps. Her next of kin have been notified, the British High Commission said.
“Some suspected kidnappers armed with dangerous weapons gained entry into a recreational resort called Kajuru Castle in Kajuru local government area shooting sporadically and in the process shot dead two persons, including an expatriate lady, and took away three others,” Kaduna state police spokesman said.
The police did not name the other person killed.