(Adds details, background)
NIAMEY, May 15 (Reuters) - Gunmen killed at least 17
Nigerien troops in an ambush near the Malian border, where
several jihadist groups are active, and another 11 soldiers are
missing, a government spokesman said on Wednesday.
The attack on Tuesday occurred near the town of Tongo Tongo,
where fighters from an Islamic State affiliate killed four U.S.
special forces and four Nigerien soldiers in an ambush in
October 2017, spokesman Abdourahamane Zakaria told Reuters.
Zakaria did not identify the perpetrators of the attack,
which is one of the deadliest against the military in Niger's
west in recent years.
Jihadists, including affiliates of al Qaeda and Islamic
State, have stepped up attacks on military and civilian targets
across West Africa's Sahel region this year, particularly along
the porous borders between Niger, Mali and Burkina Faso.
Niger also faces a threat in its southeast from Boko Haram
and a splinter group affiliated with Islamic State, which are
both based in Nigeria but frequently strike in neighbouring
Niger, Chad and Cameroon.