A 14-year-old girl was killed by a lion on the outskirts of Nairobi, the Wildlife Service in Kenya (KWS) reported.
The child was a gram of Rancho's Residential Compound to Nairobi National Park, according to the Conservation Agency.
The alarm was raised by another teenager and the KWS Rangers followed traces to the nearby River MBAti, where they found the remains of the primary school.
The lion was not found, but KWS said it had put a trap and deployed search teams to search for the animal.
The agency added that additional security measures have been taken to prevent additional attacks.
Nairobi National Park is only 10 km (six miles) from the city center and is home to animals such as lions, buffaloes, giraffes, leopards and cheetahs.
It is surrounded by three sides to stop the animals from wandering in the city, but is open to the south to allow the animals to migrate in and outside the area.
While the lions often conflict with people in Kenya, especially over the cattle, it is not common to kill people.
Last year CCTV footage filmed the moment a Lion grabbed dog Rottweiler from another home near Nairobi National ParkS
KWS also reported that a 54-year-old man was killed by an elephant on Saturday. The incident happened in the central side of Nyeri, about 130 km (80 miles) north of Nairobi.
The elephant grazed in a simple forest when he attacked a man who suffered serious breast injuries, broken ribs and internal trauma.
He was taken to a nearby hospital, where he died of his injuries.
Paula Kahumbu, the head of the wildlife protection group, said death was not an isolated incident and called on KWS to improve “risk assessments and to guarantee accurate real-time communication for the movement and behavior of the wild, especially in known high-risk areas such as Savanna Ranch.”
She also said that all the lodges, camps and residential developments near areas where the wildlife lives must be “equipped with anti-chair-chairing systems-including lights, alarms, secure fences and sprays for pre-leaders.”
“Prevention is our first and best line of defense,” she added.
Additional reporting from Ruth Nessoba and Gladys Kigo in Nairobi