An American tourist was among four people who were killed when a man plowed through several people on London’s Westminster Bridge on Wednesday before attacking a police officer who was guarding Parliament.

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The terror attack claimed the life of Utah resident Kurt W. Cochran, family members said in a statement.

Cochran was visiting London with his wife, Melissa, to celebrate their 25th wedding anniversary. They were expected back in the United States on Thursday.

This undated photo provided by Clint Payne shows his sister, Melissa, and her husband, Kurt Cochran. A statement from the Mormon church issued Thursday, March 23, 2017, on behalf of relatives said Kurt Cochran was among those killed in the London attack Wednesday and Melissa was seriously injured. (Courtesy of Clint Payne via AP)
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Melissa Cochran suffered what family members described as “serious injuries” in the attack.

“We express our gratitude to the emergency and medical personnel who have cared for them and ask for your prayers on behalf of Melissa and our family,” the family’s statement said. “Kurt will be greatly missed, and we ask for privacy as our family mourns and as Melissa recovers from her injuries.”

Family members told KSTU that the couple was on a "dream vacation" and spent time in Germany and Austria before arriving in London.

“Our family is heartbroken,” the family statement said. “Kurt was a good man and a loving husband.”

London metropolitan police said four people died in the London terror attack, including Cochran, the unidentified assailant and Keith Palmer, a 15-year veteran of the London metropolitan police force who was killed as he was protecting Parliament.

The fourth victim was identified by The Guardian as Aysha Frade, 43, a mother of two who taught Spanish at DLD College in London.

Police said they have arrested eight people in connection with the attack. They continued to investigate on Thursday.