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Sunil Tripathi Missing: Brown University student's family seeks security videos

Undated photo of Sunil Tripathi Facebook

(CBS/AP) PROVIDENCE, R.I. - The family of a Brown University student missing since March 16 is appealing to area businesses to turn over surveillance footage.

PICTURES: Missing Brown University student

Twenty-two-year-old Sunil Tripathi, a native of Bryn Mawr, Pa., was on leave from the Ivy League school, but living in an apartment near campus with several other Brown students.

His family last heard from him around midnight on Friday, March 15, and he was last seen the following morning.

His sister, Sangeeta, says they're hoping businesses with security cameras near where he lived on Angell and Brook Streets turn over footage from that day so they can try to track his movements.

Providence Police are working with police at Brown and the FBI to investigate Tripathi's disappearance.