Police officers remain on scene Tuesday morning, saying there is no immediate threat to the public

HILLSBORO TRIBUNE PHOTO: GEOFF PURSINGER - Hillsboro Police officers pick up debris from several bottles found at Reedville Park Tuesday morning that contained some type of explosive.Hillsboro Police say five bottles containing some type of explosive material were found at Reedville Creek Park around 9:30 a.m., Tuesday morning.

Parks crews were performing maintenance duties when a crew member discovered the bottles, according to police. One crew member attempted to pour out one of the bottles when it exploded. Police say no one was injured.

HPD spokesman Lt. Henry Reimann said the bottles were likely left by kids or teenagers.

"What we found were five explosive devices. Not like a bomb .... bottles filled with corrosive agents and aluminum foil," said Reimann. "When you shake them they produce heat and you get an explosion.

"Long story short, remember in chemistry with dry ice? Something like that."

The chemicals were found inside two 16-ounce bottles of water, as well as a half-gallon or gallon and two quart-sized bottles which were left at the park near a restroom.

The Portland Explosive Ordinance Disposal squad was called in to gather evidence and to dispose of the four remaining bottles. Officers remained on the scene until about 11:30 a.m.

The park, at 7500 S.E. Frances Street, is located directly across from R.A. Brown Middle School, which went into lockout — with no one allowed in or out of the school — around 9:30 a.m., said Hillsboro School District spokeswoman Beth Graser. Nearby Ladd Acres Elementary School also went into lockout.

The lockouts lasted about 30 minutes.

All schools and parks in the Century-area feeder group were checked, Graser said, and district officials were auto-dialing parents. An announcement was read at Brown Middle School telling students not to touch items that aren't theirs, and to alert the district if anyone has any information regarding the incident, according to Graser.

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