"There was a lot of activity this weekend," Hanover Police Chief Nicholas Giaconne said in an interview with The Dartmouth.
Giaconne said he did not have access to information regarding specific incidents at the time of the interview.
Five student arrests were made in conjunction with ambulance calls, according to the police records.
In 2008, 11 students were arrested during Green Key weekend, and seven were arrested in 2007.
Of the nine Dartmouth students arrested in alcohol-related incidents, four were freshmen and four were upperclassmen. One graduate student who is under the age of 21 was arrested for unlawful possession of alcohol.
No alumni were arrested, but three members of the Class of 2006 were taken into protective custody early on Saturday morning. Hanover Police officers take people into protective custody if they are of legal age to consume alcohol, but the officers have determined that they are intoxicated to the point that they are a danger to themselves or others, Giaccone said.
A female member of the Class of 2012 and a male member of the Class of 2010 were involved in a fight on Webster Avenue at 6:54 a.m. on Sunday morning. Both students were arrested and charged with unlawful possession and intoxication. The female student was also charged with simple assault.
Several students reported that multiple laptop computers and iPods were stolen from rooms in the McLaughlin Residential Cluster on Friday night, though that information could not be confirmed.
Hanover Police also responded to an incident at Psi Upsilon fraternity at 12:30 a.m. on Saturday morning involving an injured member of the Class of 2008.
The alumnus, who asked to remain anonymous due to concerns about maintaining his current employment, said he became injured while performing a "keg stand," in which an individual drinks from a keg while being held upside down.
The alumnus said his hand slipped, causing him to fall and hit his head.
"After I hit my head, I didn't really know where I was," he said. "I had a big cut on my head that was bleeding everywhere."
The alumnus said he was transported to Dartmouth-Hitchcock Medical Center, but had no injuries other than a mild concussion and the cut, which required several staples to close.
No arrests were made as a result of the incident.
Fraternity officers from several different organizations characterized the weekend as "successful."
Sigma Nu fraternity President Benjamin Beckerman '10 said his organization's "Early 80s" party on Friday was well attended.
He also said his organization was not sanctioned by Safety and Security during the weekend.
Bill Mergner '11, social chair of Sigma Phi Epsilon fraternity, said his organization's "Pop Punk" party was also well attended.
"I thought it was good having [a party] on a Thursday," he said. "It allowed people to start their weekend whenever they wanted."
A fire alarm was pulled during the party, Mergner said. The party continued after students were allowed to reenter the fraternity.
When Safety and Security officers responded to the fire alarm, they discovered an unregistered keg outside of the organization's physical plant as they approached, Kevin Scully '09, former president of Sig Ep, said. Scully, who said he witnessed the incident, said the keg was not to be found in the fraternity's possession. College proctor and head of Safety and Security Harry Kinne could not be reached for comment.
Alpha Chi Alpha fraternity President Scott Niehaus '10 said he could not comment on whether his organization had been involved with Safety and Security during Green Key Weekend.
Members of Phi Delta Alpha fraternity, Gamma Delta Chi fraternity, Chi Gamma Epsilon fraternity and Alpha Delta fraternity did not return requests for comment.
The Green Key ball, hosted by the Green Key society for the first time since 1967, was "a great success," according to Green Key Society executives.
"Everyone seemed to be having a great time," Brendan McVeigh '10 said.
McVeigh is a former member of The Dartmouth Business Staff.
Approximately 300 students attended the event, McVeigh said.
Staff writer Susan Matthews contributed to the reporting of this article.
