The search continues for a student from Princeton University who is reported missing.
Lauren Blackburn is a 23-year old undergraduate who was last seen on campus on Saturday.
So far, authorities have been focused along Carnegie Lake, which sits very close to the main campus of Princeton University.
Boats belonging to Hamilton Rescue were on the water by 1 p.m. Tuesday using sonar to search the bottom of the lake.
Police honed-in on the lake after Blackburn’s phone was traced to the are of the lake.
The university says, Blackburn was last seen on Saturday, April 19 near the Firestone Library.
Heh was wearing jeans with torn knees, a yellow T-shirt and a black zippered hoodie.
The 23-year old is 6 feet, 2 inches tall, with brown eyes and black hair.
Blackburn is from Indiana.
He was studying at Princeton with the aid of The Gates Scholarship, which pays tuition for minority students from low- income families.
Only 300 of those scholarships are awarded to high school students each year.
Search boats were pulled from Carnegie Lake by 3:30 p.m.