The man arrested in a string of shooting incidents at public buildings around suburban Maryland has been definitively linked to yet another shooting incident, through the window of a library, Anne Arundel County police said Wednesday.

Hong Young, of Beltsville, is now a suspect in shootings at nine locations. No one has been reported injured in any of the incidents.

He is being held without bond, police confirmed in a statement on Wednesday.

Young, 35, was initially arrested on March 3, on charges including attempted first-degree murder for firing at a man in his car near the Costco at Arundel Mills Mall on Feb. 24. Bullets hit the car and grazed the man inside but did not injure him.

At the time of Young’s arrest, authorities said they also had linked him to four other shooting incidents: at a Wal-Mart in Laurel at 2:50 a.m. on March 2, at a movie theater at the Columbia Mall two hours later, on the Intercounty Connector highway on March 3 and at the National Security Administration campus in Fort Meade that same day.

On Wednesday, authorities said he had been linked to a third shooting incident early in the morning of March 2. About 3 a.m., just after firing at the Wal-Mart, a bullet went through the window and into the ceiling of the Russett Library in Laurel. No one was inside the library at the time.

Anne Arundel police have also said that they learned after arresting Young about shots being fired at the Maryland Live casino, to which Young might be a connected.

And they said he may have fired four bullets at the windows of a buffet in Laurel and thrown rocks through the windows of a second Laurel buffet.

The numerous incidents are being investigated by police departments across the suburbs where the shots were fired — Anne Arundel County, Howard County, Prince George’s County and the city of Laurel. Young may face further charges.

Young, a former prison guard, told investigators that “he was hearing voices” that told him to fire the shots. Police who searched his Beltsville home recovered 10 firearms, hundreds of rounds of ammunition and a crossbow, which they said were all legally obtained.