Houston Police and Houston Crime Stoppers say the reward for information that leads to an arrest in the murder of Josue Flores has been increased to up to $20,000.

The 11-year-old was attacked and stabbed to death on his way home from school in north Houston last week.

Information may be reported by calling 713-222-TIPS (8477) or submitted online at www.crime-stoppers.org. Tips may also be sent via a text message by texting the following: TIP610 plus the information to CRIMES (274637) or via the mobile app (Crime Stoppers Houston).

All tipsters remain anonymous.

Earlier this week, police officers recovered a knife from a storm drain not far from where Flores was stabbed to death.