Two teenage boys have been arrested on suspicion of two knifepoint robberies in Croxley Green.
The boys, aged 15 and 16 and both from Harrow, were arrested on suspicion of robbery on Monday, March 25 by Local Crime Unit, Safer Neighbourhood Team and Operation Scorpion officers.
The 15-year-old was also arrested on suspicion of possession of an offensive weapon and possession of cannabis.
The arrests relate to two alleged incidents in Mill Lane, the first on March 20 and the second on March 22.
In the first, a 15-year-old boy reportedly had his wallet and smartphone taken and in the second, a 12-year-old boy reportedly had his smartphone stolen.
On both occasions, the victims were allegedly threatened with a knife. Neither of the victims were physically injured.
They have been released on bail until April 20, with conditions to not enter Hertfordshire.