Louisiana authorities say they have been "flooded" with tips in their search for a missing college student last seen leaving a late-night party by bicycle.

The search for Michaela "Mickey" Shunick intensified after police released surveillance videos Friday showing a bicyclist thought to be the missing 22-year-old college student. Police also said they were eyeing a white four-door pickup truck seen in the same video.

"We've actually been flooded with information on potential trucks and why they are suspicious, that we should check a residence because there is a truck there," Lafayette police spokesman Cpl. Paul Mouton told the Daily Advertiser. "The tips have included anything and everything. It's been a tremendous response.

Shunick was last seen around 2 a.m. May 19 leaving a house party in a neighborhood popular with college students. The anthropology major at the University of Louisiana, who friends describe as "responsible," left the home on a black bicycle.