The last known surveillance video footage of Strain showed him walking north between James Robertson Bridge and Woodland Street Bridge, Nielsen said, adding that no one else was around him.

\"At this point, we're kind of back canvasing ... the possible route he may have taken from Broadway ... to look for any other cameras we may have missed, as well as look for any other potential employees at some of these businesses that we can talk to,\" Nielsen said.

The search for Strain is ongoing.

\"PHOTO:
Metro Nashville Police Department
PHOTO: Nashville police released images of their search for missing college student Riley Strain.
>

Authorities are searching by foot, by drone and by boat, including using boats with sonar equipment, Nielsen said.

Investigators are recanvassing for video and speaking to employees at local bars, all of whom have been \"extremely cooperative,\" Nielsen said.

OEM crews deployed 2 boats to aid with searches of the riverbank area. Addition of sonar equipment was requested with this launch & crews will work a path set in coordination with @MNPDNashville as they continue to investigate the whereabouts of the missing 22 year old student. pic.twitter.com/8HBifRdugv

— Nashville EOC/OEM (@NashvilleEOC) March 13, 2024

\"All of our resources are dedicated toward finding him,\" Nielsen said.

As the investigation continues in Nashville, a vigil was held Wednesday at Strain's former high school in Springfield, Missouri.

\"Riley's such a good kid,\" Strain's grandmother, A.J. Gilbert, told Springfield ABC affiliate KSPR. \"It's wonderful that so many people, they're sharing [the news], hoping to bring him home.\"

Anyone with information is asked to call Nashville Crime Stoppers at 615-742-7463.

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