OAKLAND -- A report of people seen walking into an East Oakland house with guns Tuesday afternoon led to the arrest of a parolee and the recovery of four firearms, police said.

A caller told police about 12:50 p.m. that there were people who had guns inside a house in the 2400 block of 90th Avenue.

More than 20 officers responded to the scene and shut down 90th Avenue between MacArthur Boulevard and Hillside Street while they established contact with the people inside.

Between 1:37 p.m. and 1:47 p.m. nine people inside -- two men, five women including one holding an infant, and a teenage girl -- came out voluntarily and were interviewed by officers.

A police dog led a squad of officers inside the house at 2:09 p.m. in the subsequent search and a shotgun and three handguns were found. One of the men who came out voluntarily was arrested. The occupants were eventually allowed to return to the house.