Deputies said the suspect claimed the gun went off by accident, but investigators said they found evidence that the gun had been shot multiple times.
Sheriff's office deputies confirmed a man and woman, who they were told were husband and wife, died after crashing with a pickup driver on FM-1960 E on Friday.
Atascocita officials said there weren't any students on board the Humble ISD school bus when it was involved in a multi-vehicle crash on West Lake Houston Parkway near FM 1960.
The sheriff's office said the motorcycle rider was driving at a high rate of speed when he collided with another vehicle and died.
Investigators said the 39-year-old victim was in a physically abusive relationship with the man who is now charged with her murder.
Officials said snow plows are being used on freeways only, and brine has been placed on overpasses and bridges. However, it's still advised to avoid driving on Tuesday night as the temperatures drop.