SPLENDORA, Texas -

A former student at Splendora High School has been arrested after police say he posted a threat on Facebook about a school shooting.

"I was pretty surprised. It was a shock to think that that kind of thing has made it up here to this relatively small school," said concerned father Wyatt Mericle.

Jacob Marino, 18, is accused of posting the following message on Facebook Wednesday afternoon, "At this point, I am seriously contemplating a school shooting, I want to kill everyone in Splendora High especially the staff."

Students saw the threat online and reported it to district administrators. Splendora Independent School District Police arrested Marino late Wednesday night with the help of the Texas Rangers and Montgomery County Precinct 4 Constables Office. He is charged with making terroristic threats.

"I really hope that he will wake up, realize, and see all the harm he could have caused," said Mericle.

Authorities increased security at the campus Thursday morning and a letter was sent home to parents notifying them of the threat.

"It is good that they responded like they did, and took it seriously, so many times we don't take things very seriously, and we suffer the consequences," said Mericle.

Officials say the incident should serve as a warning to others.

"Anything we say in print, through social media is something that we have said and we have to own it," said Splendora ISD Superintendent Dr. Genese Bell.

School officials said it is important to talk with your kids about reporting threats if they hear or see one.

The districts said any report of a safety issue will be taken seriously and will be investigated. For more information about Splendora ISD's safety policies, click here.