Seven people were killed when Boko Haram fighters launched an assault in northern Cameroon, a Cameroonian security source and a rights group have said.
Six Boko Haram members and one Cameroonian soldier were killed in the attack on Sunday, the source told the AFP news agency on Monday. Two other Boko Haram fighters were captured near the Nigerian border, the source added.
The local rights group, the Os-Civil Droits de l'Homme, also reported the assault to the AFP and said there were victims, without specifying a number.
"On Sunday, Boko Haram Islamists entered Cameroon... there was a clash between them and the soldiers," said the rights group's spokesman, Mey Aly.
"Around 30 heavily armed Boko Haram soldiers crept discretely into Cameroon. A villager saw them and raised the alarm," she added.
"The region's populations have been terrorised by incursions from Islamists like Sunday's. We call on stronger efforts from the authorities to reassure the population," Aly said.
100 dead this month
Earlier Monday, an official said that suspected fighters had killed 29 people in Nigeria's embattled northeast on Sunday, the latest carnage in a surge of violence that has left more than 100 dead this month alone.
The Nigerian military has launched a major offensive against the armed group, which has killed thousands of people since 2009.
Last Wednesday, Labaran Maku, Nigeria's information minister, said that much of his country's problem with Boko Haram stemmed from its border with Cameroon and called for "increased partnership" to work against the group.
Nigeria has alleged that the group has set up bases in sparsely populated areas of its northeastern neighbours, including Cameroon, Chad and Niger, and flee across the border after staging attacks to avoid military pursuit.
"They strike. When we pursue them, they retreat into Cameroon," said the minister.