"There's still plenty of people we want to talk to, interviews that need to be done," he said.
It appears, he said, that there were no witnesses to Love's death or the moments that led up to it.
"He appeared upset by the circumstances he found himself in," Longo said of Huguely. "He was cooperative, [but] he was obviously distraught."
Love's death has stunned the college campus, now in its last day of classes before finals.
"It's just a really scary thing that happened and a lot of people are shaken up by it," one student said.
"We are all mourning. losing a member of our community it is really hard," Frances Caruy said, "knowing someone from our family is not here anymore."
Their player profiles on the university's sports website show talented athletes from promising backgrounds.
Love hailed from Cockeysville, Md., and attended the prestigious Notre Dame Preparatory School where she was all-county. At UVA, she was a member of the Kappa Alpha Theta sorority.
Reached by telephone, Love's older sister Alexis said that for now, the family had no comment.
Huguely, according to his athletic profile, weighed more than 200 pounds and was All-American in high school.
A source in the university community who asked to remain anonymous said he was in disbelief when he heard the allegations against against Huguely.
"I was in shock," said the source. "And I immediately started questioning it."
"[Huguely] was always well liked well respected and had plenty of friends," said the source adding that Huguely could be described as a "big man on campus."
Huguely had dated and had an intimate relationship with Love for "at least a year and a half," according to the source, and had met because the boys' and girls' lacrosse teams frequently socialized.
"Their circle of friends, and it was a large circle, they all knew they were together," said the source.
The source declined to comment on Huguely or Yeardley's drinking and partying habits and when asked if Huguely was one to grow possessive of a girlfriend, the source said, "He was not the jealous type."
"He has a clean history and he had a good job lined up at a commerical real estate firm in Washington, D.C.," said the source.
In an interview posted on the Cavaliers' site in 2009, Love said it had been her dream to play lacrosse at Virginia and credited her high school coach with readying her for college sports.
"She not only prepared me to play at the college level, but she taught me important life lessons," Love said in the interview. "She always put a strong focus on good sportsmanship and working together as a team."
University President John Casteen issued a statement saying administrators are not only mourning Love, but that they "feel anger on reading that the investigators believe that another student caused it."
"That she appears now to have been murdered by another student compounds this sense of loss by suggesting that Yeardley died without comfort or consolation from those closest to her," Casteen said, calling Love "a student of uncommon talent and promise."
In a later statement, Casteen said Love "did not deserve to die."
"She deserved the bright future she earned growing up, studying here, and developing her talents as a lacrosse player," Casteen said in the statement. "She deserves to be remembered for her human goodness, her capacity for future greatness, and not for the terrible way in which her young life has ended."
ABC News' Michelle Ruiz and Ashleigh Banfield contributed to this report