reporter: before it burned, it was full of squatters. concord police late today took 32-year-old transient michael moss into custody. just steps away from the building he is accused of torching. the fire broke out about noon in this four unit building and authorities say was intentionally set in a ground floor unit where moss had been staying. that building foreclosed that they were squatting in. reporter: tenants next door say ever since the building was vacated people have been breaking in and living there -pl some of them former tenants. they re all on drugs. they re all going back over there. they re all tweaking and there s a lot of stuff that goes on around here. i ve called police several time, i ve called the bank. reporter: neighbors have watched in frustration as the building became a flop house. you have kids and you know that squatters bring in all types of degenerative people that do drugs. imagine if that fire wasn t caught right away and it went f
it was full of squatters. concord police late today took 32-year-old transient michael moss into custody. just steps away from the building he is accused of torching. the fire broke out about noon in this four unit building and authorities say was intentionally set in a ground floor unit where moss had been staying. that building foreclosed that they were squatting in. reporter: tenants next door say ever since the building was vacated people have been breaking in and living there -pl some of them former tenants. they re all on drugs. they re all going back over there. they re all tweaking and there s a lot of stuff that goes on around here. i ve called police several time, i ve called the bank. reporter: neighbors have watched in frustration as the building became a flop house. you have kids and you know that squatters bring in all types of degenerative people that do drugs. imagine if that fire wasn t caught right away and it went farther it just could have been