Police have made a fifteenth arrest in their hunt for three brothers believed kidnapped by their biological father from a home in Croydon last month.

Yesterday afternoon (September 10), police confirmed they had arrested a 45-year-old man at Heathrow Airport on Thursday for "conspiracy to kidnap".

He was arrested by Taskforce officers on a returning flight to the UK, and is now being held at a south London police station.

As the Croydon Guardian reported previously, an urgent search for Bilal, Mohammed Ebrar and Mohammed Yaseen Safi was launched by police late last month after they were reportedly abducted from a home in Coulsdon.

The primary suspect is Imran Safi, the boys' biological father, who reportedly broke into the children's' foster home on Coulsdon Road around 6pm on August 20 and threatened their foster mother with a knife before taking them away in a red Nissan Qashqai.

Fourteen other people including several from Croydon have already been arrested as police hunt for Safi and his three sons:

[A] A 25-year-old woman and [B] a 32-year-old man were arrested in Kenley on Friday, 21 August.

Three men – two aged 20 [C] and [D] and one aged 17 [E] - were arrested in Croydon on Sunday, 23 August.

[F] A 25-year-old woman and [G] a 37-year-old man were arrested in Kenley on Tuesday, 25 August.

[H] A 33-year-old man was arrested in Croydon on Tuesday, 25 August.

[A] – [H] have been bailed to return to a south London police station at a later date.

Four men - aged between 21 and 41 [I], [J], [K] and [L] were arrested at an address in Ilford in the early hours of Friday, 28 August. All four have been released on bail to return to a south London police station in early September.

[M] A 31-year-old man was arrested at a residential address in Ilford on Saturday, 29 August. He has since been released under investigation.

[N] A 17-year-old male was arrested at an address on Connaught Road in Bristol. He was arrested on suspicion of being involved in the abduction and has since been released on bail.