A British aid worker and a Nigerian man were shot dead after being kidnapped with three other people in an attack at a resort in Nigeria on Friday, officials said.

The British High Commission said in a statement Sunday that Faye Mooney, 29, was killed when gunmen attacked the Kajuru Castle holiday resort in Kaduna state, located in the north-central part of Nigeria.

Mooney worked as a communications specialist for the aid group Mercy Corps, and was one of 12 tourists traveling to Kaduna from Lagos, according to Kaduna state police spokesman Yakubu Sabo.

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The 29-year-old, who has lived in Nigeria for nearly two years, was attending a party before the incident, Sky News reported.

Mercy Corps said in a statement it was "utterly heartbroken" by the killing.

"Faye was a dedicated and passionate communications and learning specialist who had worked with Mercy Corps for almost two years, devoting her time to making a difference in Nigeria, supporting our teams and the communities we work with to tell their stories of impact, and leading efforts to counter hate speech and violence," the group said.

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Sabo told reporters the gunmen kidnapped three other people but officials did not release details of their nationalities. Officers have not yet named the other person killed in the incident.

No individuals or groups have claimed responsibility for the killings, and police have yet to identify the kidnappers.

Northern Nigeria has been dealing with violence from Islamic militants affiliated with Boko Haram and ISIS, in addition to clashes between farmers and herders, in which hundreds have died.

The region has seen a spate of kidnappings by armed men in recent months, according to Sky News.

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Earlier this month, an American tourist and her safari guide were kidnapped by gunmen in Uganda’s Queen Elizabeth National Park. Kimberly Sue Endicott and her guide, Jean-Paul Mirenge Ramezo, were eventually found alive in Congo, where their kidnappers had taken them after abducting them.

The kidnappers had demanded a $500,000 ransom after abducting the two at gunpoint. Ugandan officials say no ransom was paid, but a tourism operator said that money was paid to secure Endicott's release.

Fox News' Katherine Lam and The Associated Press contributed to this report.