He lives close by in Kozel's house....

Make haste for a doctor! I will pay, see ?" He pulled money out of his pocket and showed it to the policeman.

He was in violent agitation.
The police were glad that they had found out who the man was.
Raskolnikov gave his own name and address, and, as earnestly as if it had been his father, he besought the police to carry the unconscious Marmeladov to his lodging at once.
"Just here, three houses away," he said eagerly, "the house belongs to Kozel, a rich German.

He was going home, no doubt drunk.

I know him, he is a drunkard.