FAIRFIELD - Fairfield police are working with other law enforcement officials to find out more about the local man accused of bringing two guns to the University of New Haven on Tuesday.

William Dong is accused of bringing two loaded guns to the campus in West Haven, prompting a lockdown at the campus. Police say Dong commutes to the school from a home he shares with his family on Stratfield Road in Fairfield.

Newspaper clippings about mass shootings and an arsenal of ammunition were found in Dong’s bedroom, according to police.

Police Chief Gary MacNamera says an investigator was in West Haven today and one will remain there during the investigation. He says officers helped to secure Dong's home Tuesday night.

"We are now working with the West Haven Police Department helping firm up some background information on the individual and then at the same time we're also trying to gain an understanding of the individual and what his impact is to our community," says MacNamera.

Dong went to Fairfield Warde High School. Neighbors say his family has lived in their home for more than a decade. He can be seen smiling in his yearbook photos.

Dong was arraigned Wednesday on illegal gun charges. He is being held on $500,000 bond and will appear before a judge in a week and a half.