The alarm came shortly after 10 pm on Sunday evening.

- It was some form of detonation, but I can not go into exactly how it happened, says Pontus Sandulf, duty officer at the Stockholm Police Regional Command Center, to TT.

Pictures show how the explosion shattered the glass of a built-in balcony.

Timbro's CEO Benjamin Dousa lives right next door and tells Aftonbladet that the explosion made the whole house shake.

- An entire car was damaged from the road side and a balcony was damaged.

Several neighbors had seen a car parked on a hot run and then pulled on properly from there, says Dousa who was previously chairman of the Moderate Youth Association (MUF).

The police are investigating the incident as general destruction.