According to police spokesperson Dennis Johansson Strömberg, the teenage boy was allegedly robbed outdoors on Finningevägen in Strängnäs at around 4.30pm on Tuesday.
- But we didn't get the alarm until 50 minutes later.
The teenage boy is said to have been robbed by three masked people.
I don't have any details about how the robbery took place, but the guy allegedly got rid of clothes and a phone, he says.
According to the police, the teenage boy was not physically injured during the robbery.
- We do not yet have a suspect, says Dennis Johansson Strömberg.