How can someone get a warrant in the mail just because someone says he was in the area? 7 Answers as of January 04, 2012

My husband went to pick up his mother at her sisters house in another town. The house across from my husband's Aunt's house was burglarized. The owner of the house that got burglarized, had some workers doing work to her house that day also, when she discovered the missing items she asked her workers about it. they told her that they had seen my husband across the street that day, so the home owner went to my husband's aunts houses and asked my husband's cousin who he was, his cousin gave her his name. The first thing we ever learned of it was the day my husband got a warrant for his arrest in the mail for burglary and possession of stolen property. the police said that the items taken were hocked that same day. and that they had evidence, which is bogus because my husband is innocent, it seems they don't have any. they said a signature. It isn't my husband's. We have phone records of my husband on the phone in our town at the time of the burglary. There are several other people who could be suspects how ever their convinced he did it. How can someone get a warrant in the mail just because someone says he was in the area?