Police investigations are ongoing into two incidents that took place last month on the Princeton University campus. One involved a student allegedly taking explicit photographs of another student while he was sleeping. The other concerned an employee at the University Place Princeton University store who police say was visited by a prostitute and took part in paid sexual acts at the store after hours.

But Jim Sykes, president of the store, says it isn’t clear that the incidents involving employee Eric Everett and a prostitute actually took place after the U-Store’s 4 a.m. closing time. Mr. Everett, who worked in the U-store’s campus location, was arrested and charged with prostitution and shoplifting after the store manager discovered money was missing when he audited the safe.

Revelations about the sexual acts came to light only after Princeton Borough police were informed of the missing funds. Also arrested was Brittany Smith, 20, of Keyport, who was not an employee of the store.

“From our perspective, all we were aware of was an employee theft,” Mr. Sykes said Monday. “We had no idea of the other part of it until a release came out from the Borough Police. What we can’t confirm is that this happened after hours. I mean, we’re open until 4 a.m. We’re just not sure of when it happened.”

It was on September 20 that the U-Store manager checked the safe and found that it came up short. “He asked everyone about it, and then Mr. Everett started to tell him about having his ex-girlfriend there,” Mr. Sykes said. “That started a sequence, and we informed the police.”

Mr. Everett, who was arrested September 24, apparently met Ms. Smith on Craigs list and arranged for her to visit him at the store on at least three occasions. The pair allegedly helped themselves to several items from the shelves. Borough Police learned of the sexual acts while investigating the thefts. Ms. Smith was arrested on September 25 and found to be in possession of a marijuana pipe and Adderall tablets.

Both Ms. Smith and Mr. Everett were charged and released without bail. Ms. Smith was charged with prostitution, possession of a controlled and dangerous substance, and possession of drug paraphernalia.

Mr. Everett, who is 23 and lives in Bordentown, was sent a letter terminating his employment at the store.” We hired him when he was 20,” said Mr. Sykes. “He lives at home. He seemed like a fairly normal guy. It’s a shame.”

Richard Charles Tuckwell, a 20-year-old Princeton University student from Australia, was charged last month with one count of invasion of privacy after allegedly taking photographs of another male student after he drank alcoholic beverages and fell asleep. Borough Police said the incident occurred on September 16 after Mr. Tuckwell met the other student at a party at one of the University’s eating clubs. The two went to a campus dormitory. The student, who fell asleep, awoke to find Mr. Tuckwell photographing him.

Mr. Tuckwell surrendered voluntarily to police on September 21. He was processed and released. The investigation, which also looks into whether Mr. Tuckwell sexually assaulted the other student, is continuing, according to Borough police.

Last May, Rutgers University freshman Tyler Clementi took his own life after his roommate broadcast video he took of him engaged in sexual activity with another man.

“It’s not that we’re really comparing this case to that,” said Borough Police Captain Nicholas Sutter of the Princeton University case. “But it is a serious incident, and we’re treating it as such.”