It was in connection with staff from the home care service letting ambulance staff into an address in Sandviken that the man went on the attack shortly after midnight.
He then came running out with a knife, and began to chase the staff from the home service.
The police were alerted and several patrols arrived at the address.
The man could be arrested, and the police found a knife on him during the arrest.
The man is in his 50s.
During a house search in his apartment, the police found drugs, which were seized.
No one was injured.
The man is suspected of illegal threats and drug offenses, and prosecutors decided to arrest him.