Two McKeesport teenagers who have been charged with spray-painting graffiti on 13 houses and a church in White Oak early Sunday also may have hit buildings and cars in McKeesport, White Oak police said.

The 17-year-olds were not identified because they are juveniles.

White Oak residents awoke Sunday to find profanity and nonsensical sayings, like "Mr. Happy," in large letters across their garages and on the sides of their houses, located on O'Neill Boulevard, Lincoln Way, Fawcett Avenue and Amherst Street.

On houses elsewhere, the spray-painting included profanity, the word "Satan" and a pentagram. "Insane" was written on a McKeesport attorney's office on O'Neill Boulevard.

At Ascension Greek Orthodox Church on Summit Street, "[expletive] God" was sprayed on the side of the church and "Burn in Hell" on a nearby sidewalk.

And the word "die" appeared underneath a "Watch Children" sign.

McKeesport Assistant police Chief Alfred Tedesco said his department has identified the boys as "persons of interest" in six to eight acts of graffiti committed in the same time frame in his city.

White Oak police Chief Joe Hoffman said the boys did not understand the impact the graffiti can have on a community.

"This was obviously senseless," he said. "It can frighten people. It violates them when it's done on their property, or their businesses or a church."

McKeesport Mayor Jim Brewster said: "[It's] a couple of local teenagers deciding they're going to do something silly. I think it's important that young people know that there's consequences."

Chief Hoffman said it was one of the worse sprees he's seen.

"This was extensive damage done by these two 17-year-olds," he said. "It's the most significant that we have had in the last several years."

Chief Hoffman said his department has not received all damage estimates, but believes the total is in the thousands.

After the story was broadcast, police received tips on who the perpetrators might be. They contacted the boys' families, who brought them in and they confessed to the vandalism in White Oak. They also said they spray-painted buildings in McKeesport. They were released to their families.

White Oak police will charge the two with institutional vandalism because they spray-painted a church, which is a felony. Additional charges have not been determined because they will depend in part on the dollar amount of damage done. But they could be charged with up to 13 counts of vandalism.

Chief Hoffman said he is sharing information from his investigation with the McKeesport police.