I just did a "reverse number lookup" from this link:
http://www.whitepages.com/5116/reverse_phone
and this is what I got:
(619) 240-1044 is a cell phone based in Chula Vista, CA
The registered service provider is Sprint Spectrum L.p**.
Detailed listing information is not available.
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240-1044, CA
Perhaps this information could be given to the police conducting the investigation.