Two people are being held on suspicion of burglary following a smash-and-grab at the Apple Store in London's Covent Garden, Scotland Yard said.
Police were called at around 1am after one of the store's windows was smashed and a haul of Apple devices, including valuable iPads, was stolen.
It is believed around seven masked raiders riding mopeds and motorcycles were involved in the incident.
All suspects were wearing full face crash helmets and most, if not all of the motorbikes were carrying a pillion passenger, the Met said.
Shortly after the incident, officers in Islington spotted a moped believed to be involved with the raid and unsuccessfully attempted to stop it.
However, a similar vehicle was found abandoned at Wyclif Court, in St John Street, Islington.
A 16-year-old boy and 21-year-old man were arrested at the scene on suspicion of burglary.
Property, believed stolen from the store, was found in bags in their possession, Scotland Yard said.
Both suspects are in custody at a north London police station.
Detective Sargent Nathan Tozer, of Westminster CID, said: "Although two men are in custody on suspicion of burglary, the inquiry continues and other persons are sought. It is essential that anyone who saw the smash-and-grab, or the suspects making off, contact us as soon as possible."