Some neighbors in Middletown were woken up early Thursday by the sounds of booming bottle bombs outside their homes.

Neighbors said they heard the homemade bombs exploding in the 200 block of Union Street in the Dauphin County community around 5 a.m.

When borough police arrived they realized they needed to get the State Police Hazardous Devices Unit involved.

“Several police departments that assisted, the State Police, the fire department, that’s a cost to the taxpayers for basically what’s nonsense,” said Middletown Police Chief Steven Wheeler.

Police said they found four bottle bombs already had exploded before they arrived, while a fifth one had not.

Later in the morning, police got another call about three more bottle bombs in the 200 block of East Roosevelt Avenue. At that location, they found two had gone off while a third had not.

No one was injured, police said.

Bottle bombs are typically made using a soda or water bottle as well as some common household cleaners and other items. Police asked school leaders to alert kids not to touch them if they happened upon them.

Police said they have some witnesses they’re interviewing. Should the people involved be caught, Chief Wheeler said they potentially could face felony charges. He also wants the people responsible to reimburse taxpayers for the cost of responding to the incidents.