A British toddler has drowned after he fell into a neighbour's swimming pool in Spain.

Theo Lamb (2) was at an apartment next door to his family's property in Mijas Costa, on the Costa del Sol, when the accident occurred.

The boy's father reportedly discovered Theo in the swimming pool, and tried to revive him.

Emergency services were called to the property but the child died at the scene.

The UK Foreign and Commonwealth Office has confirmed the death.

"We are aware of the death of a British national on August 18 in Costa del Sol," a spokesman said.

"We stand ready to provide consular assistance to the family at this sad time."