Kenyan forces have pulled out from two military bases in Somalia, including one attacked by militant Islamist group al-Shabab, residents have told the BBC.
Al-Shabab fighters have seized the southern town of Badhadhe after the troops retreated, a local MP said.
Soldiers also left el-Ade, where al-Shabab said it had killed about 100 Kenyan soldiers 11 days ago.
A Kenyan army spokesman said troops were involved in a “normal operational manoeuvre” and not a withdrawal.
Kenya, which contributes about 4,000 troops to the 22,000-strong African Union force battling the militants in Somalia, has not said how many of its soldiers died in the attack on el-Ade, which is in the south-western region of Gedo.
If al-Shabab figures are correct, it would make it the deadliest attack on Kenyan forces since they crossed into Somalia in 2011.