Police in the Kenyan port city of Mombasa say they have arrested two people who were driving a car with two improvised bombs hidden inside it.
The suspects, one Kenyan and the other of Somali origin, were planning to attack an unspecified target, they say.
The arrests followed a tip off, a police official added.
Kenya is on a heightened state of alert after militants from Somalia’s al-Shabab Islamist group attacked a shopping centre in Nairobi last year.
Security was increased further following Monday’s incident.
“We have not established where the target was, but we have detained two terror suspects who were in the vehicle,” said Henry Ondiek of the Mombasa Criminal Investigation Department.