PROSSER -- Benjamin Velasquez still was a student at Prosser High when he apparently admitted to vandalizing the school and causing $800 in damage.

But before he was charged with the April destruction, the 18-year-old returned twice after his June graduation to commit crimes that cost $410,000 to clean up and repair, court records show.

Now, Velasquez is to stand trial in Benton County Superior Court. He is one of five suspects charged with the crimes, but the only one charged in all three incidents at his alma mater.

Velasquez has pleaded innocent to second-degree malicious mischief for the April vandalism and two counts each of second-degree burglary, third-degree theft and first-degree malicious mischief in the two June break-ins.

One of the first-degree malicious mischief charges includes the aggravating circumstance that it was a major economic offense. His trials are set Aug. 29.

Lawrence Edwin Hall, 18, is to make his first court appearance Thursday for second-degree malicious mischief.

Jorge E. Luna Guerrero, 19, pleaded innocent to two counts each of second-degree burglary, third-degree theft and first-degree malicious mischief with the major economic offense allegation. His trial also is scheduled Aug. 29.

Gumaro Cruz and Leonel Solorzano Ramirez, both 18, pleaded innocent to one count each of second-degree burglary. They face trials Sept. 12.

All five graduated from Prosser High on June 4. They have been ordered to stay off of all Prosser School District property while their cases are pending.

Prosecutors allege the first vandalism occurred April 19 when Velasquez and Hall spray painted exterior security cameras at the school and left black and green graffiti on multiple walls, doors and windows. The suspects also filled the "locking cylinders" of numerous exterior doors with an unknown substance, court records said.

The cleanup cost was $807.

Velasquez and Hall were interviewed by Prosser police April 25 and admitted the crime -- Velasquez saying he sprayed the black paint and Hall the green paint, records show.

The men weren't arrested, "which is extremely typical" because neither had prior felonies, said Deputy Prosecutor Kristin McRoberts.

The police reports were sent to the prosecutor's office the first week of May and assigned to McRoberts to review. But "unfortunately because of workload issues" and the fact the men weren't in custody, the cases weren't a high priority until Velasquez was tied to the two June burglaries, she said.

McRoberts added that had she charged Velasquez and Hall earlier, they would have been sent notification letters and ordered to appear in court three weeks later. They wouldn't have been arrested on the charge, which carries a standard range of up to 60 days in jail.

Then on June 6, just two days after Prosser's commencement ceremonies, Velasquez and Luna Guerrero broke into the school overnight and painted multiple security camera lenses, apparently to obscure their identities, court records indicate.

It is believed they got into the school at 1203 Prosser Ave. by climbing onto the roof and entering through a window.

They broke windows, ceiling tiles, a trophy case and other items, overturned furniture, smeared food and condiments throughout the building and spray painted walls and other surfaces, documents said.

At some point, McRoberts alleges Velasquez called Cruz, and he and Solorzano Ramirez came to the school and entered through the same window.

Cruz, in an interview with police after his arrest, said he and Solorzano Ramirez had been in the building and wrote on some walls with a pen but didn't cause any other damage, court documents said.

An autographed Boise State University football jersey belonging to former Prosser football star Kellen Moore was stolen from a case in the main hallway, in addition to speakers and change from a cash register, documents said. Total damage on that date was estimated at $10,000.

Ten days later, Velasquez and Luna Guerrero allegedly returned and got in through a different window. The security cameras were spray painted.

Damage included broken display cases, windows and vending machines; overturned furniture; spray painted walls and other surfaces; gallons of paint dumped on furniture, walls and the floor; and discharged fire extinguishers inside the building.

The burglars also stole a TV, a digital record, a Leatherman tool and a football jersey and helmet, court documents said. The victims are listed as Prosser High, Athletic Director Casey Gant and Principal Kevin Lusk.

Documents state that cleaning, replacement and repair of the damaged property from June 16 is estimated at more than $400,000.

Some of the items have been recovered, but Prosser police said they have information that the suspects dumped things in garbage cans in Richland. Police said several tips from students, school staff and community members helped lead to the arrests.

Luna Guerrero is in the Benton County jail on $25,000 bail, along with a U.S. Immigration and Customs Enforcement hold. Velasquez's bail was lowered to $15,000 on both cases.

Cruz and Solorzano Ramirez are out of custody after each posted $5,000 bail.

Hall was sent a summons to appear in court for arraignment.