The provisioning of enhanced 911 service in a mobile communications
network is supplemented to include the capability of identifying other
mobile stations in close proximity to a mobile station placing a 911
call. This capability may then be used to aid in the identification of
witnesses to a crime, car accident, and the like. Constantly updated
location information for mobile stations in communication with a
switching center is maintained in a database that can be accessed by PSAP
agents on an "as needed" basis. In particular, a PSAP agent can submit a
search request, using time/date and geographic location information to
determine the identity of all mobile stations in a predetermined "radius"
associated with a 911 caller.