a few fighters may have escorted them (the bombers) to Cameroon from Nigeria," he said.

A Cameroonian soldier walks in the town of Fotokol, on the border with Nigeria, after clashes occurred on Feb. 4, 2015 between Cameroonian troops and Nigeria-based Boko Haram insurgents. A string of suicide bombers took more lives Jan. 25 in the far north town of Bodo. (Reinnier Kaze/AFP/Getty Images)

Suicide bombers are suspected to be crossing the border from Nigeria to stage their attacks, killing dozens in the region in the last month, officials said. On Jan. 18, a 14-year-old suicide bomber attacked a mosque in the region, killing four, in the fifth attack on a mosque in Cameroon in less than a month.

The Islamic militants began stepping up attacks early last year on neighbouringmourns the loss of SPC Kimball, he will be missed from our formations.”

US, TALIBAN PEACE TALKS: ‘REDUCTION IN VIOLENCE’ PROPOSAL ON THE TABLE, OFFICIALS SAY

The 21-year-old joined the Army in 2016 as an aircraft structural repairer, The New York Post reported, citing a 10th Mountain Division official. He is survived by his mother.

CLICK HERE TO GET THE FOX NEWS APP

Kimball’s passing marks the seventh U.S. service member to die in Afghanistan in 2020. On Saturday, two U.S. soldiers were killed and six were wounded when American and Afghan troops were fired on during a mission in Nangarhar province in eastern Afghanistan.

Fox News’ Nick Givas contributed to this report.