The investigation prompted the police to issue an arrest warrant for Hilario Hernandez, found in Kingsville, Texas, about 250 miles south of Pearland.
56-year-old Hernandez was employed at the Houston Police Department for 33 years and was assigned to the Theft and Theft Department, said Jodi Silva, spokeswoman for the Houston police.
"Our condolences and thoughts are with the family of the victim," Houston police said in a statement.
Belinda Hernandez, 52, worked as a librarian at Shadycrest Elementary in Pearland.
"Pearland ISD is deeply saddened to learn of the death of one of our collaborators, Shadycrest Elementary Librarian Belinda Hernandez," the district said. Hernandez was a beloved, long-time employee who had worked for Pearland ISD for 1
The district said it would provide counselors to students and staff for as long as necessary.