Police are investigating after a grandson allegedly stabbed his grandfather to death and assaulted his mother, according to Fort Worth police.

Officers were called to a home in the 3400 block of Roddy Drive at about 7:15 p.m. Police said an "Asian male had some type of episode." The grandfather was pronounced dead at the scene.

The mother and the male were sent to the hospital with non-life threatening injuries.

Their identities have not been released at this time.

Stay with WFAA for more updates.