Editor's note: This story was updated at 3:50 p.m. March 8.

Nothing was found after Cuyahoga Falls police searched the high school for signs of a bomb Friday.

Early this morning, the Cuyahoga Falls High School principal received a bomb threat through email. The email said the explosive device was scheduled to detonate at an unspecified time that day, according to the police department.

A reader said on the Cuyahoga Falls Facebook page that robo-call was sent out this morning to notify parents and students of the situation and to say the school would close for the day.

"As a precautionary measure for the safety of our students and staff, we've been working with the Cuyahoga Falls Police Department and Summit County agencies," said Superintendent Todd Nichols in an Akron News Now story. "And we'll do a thorough check of the high school building."

Nothing suspicious was located during the search, according to police.

The bomb threat is under investigation by the CFPD in conjunction with Federal authorities.