Aside from a possible gang-related shooting at the Belmont Park parking lot Sunday, police officials reported a Memorial Day weekend without significant incident. No one was injured in the May 24 shooting and police are continuing to investigate, said Lt. Jorge Duran, a San Diego Police Department gang unit investigator. Police are searching for witnesses, Duran said. “We are hoping somebody in the community may have seen or heard something,” Duran said. “Trying to find folks to cooperate with the gang unit is a challenge.” Beach-area patrols arrested 13 suspected drunken drivers during a DUI checkpoint along Garnet Avenue on Friday, May 22. Police handed out about 122 misdemeanor alcohol citations in Mission, Ocean and Pacific beaches, according to Northern Division Capt. Shelley Zimmerman. The second Memorial Day weekend since the start of a beach alcohol ban — a temporary ban last summer and now a permanent ban approved by voters late last year — lured about 750,000 sandal-clad tourists and families over the three-day weekend. “Did the alcohol ban play a role? …Yes, without question that the atmosphere is very relaxing, very welcoming, even though we had 500,000 more people compared to last year,” Zimmerman said. Officer Mark McCullough said Friday’s DUI checkpoint resulted in several arrests for driving without driver licenses and other offenses. Police did not establish checkpoints after Friday. An increase in arrests, however, means police are doing their job, said McCullough. “It’s not that there’s more drunk drivers ,we just have more enforcement … If we’re not seeing an increase in alcohol-related vehicle collisions, then we know that we’re holding the line,” McCullough said. He said no major collisions were reported. Funding for DUI checkpoints comes from an estimated $1 million grant from the California Office of Traffic Safety, McCullough said, and pays for overtime. Lifeguards also had their hands full over the holiday weekend. San Diego Lifeguard Services Lt. Andy Lerum said strong currents and throngs of people made for quite a bit of rescue activity. Lifeguards reported 219 water rescues and 229 calls for medical attention over the three-day weekend. “Overall, it was pretty busy but nothing spectacular,” Lerum said.