A Houston police sergeant was charged with murder after his wife, a longtime elementary school librarian, was shot dead over the weekend, according to police.

An arrest warrant on suspicion of murder was issued for Houston Police Sergeant Hilario Hernandez, 56, after Belinda Hernandez, 52, was found shot to death in a Pearland, Texas, home on Saturday. A family member had reported finding the body, according to the Pearland Police Department.

Hernandez was detained later Saturday in Kingsville, more than 250 miles south of where the woman was found dead, and charged with murder, said Officer Jason Wells, the Pearland police spokesman.

Belinda Hernandez was a librarian at Shadycrest Elementary School in the Pearland Independent School District, according to police.

"Mrs. Hernandez was a beloved, longtime employee who worked for Pearland ISD for 15 years," the district said in a statement, adding that counselors would be made available to students and staff "for as long as needed."

Hernandez' faculty profile on the school website says her "wish for Shadycrest students is to find that 'just right' book and fall into the world of reading," Hernandez' faculty profile on the school website says.

The Houston Police Department did not immediately respond to a request for comment. Pearland police said the department is assisting with their investigation into Hernandez.

Hernandez is being held at the Brazoria County Jail on $800,000 bail, according to jail records.