A mother and her three young daughters remain hospitalized following a house explosion in the City of Tracy over the weekend. Regions Hospital officials on Monday reported that Sonja Timmons and her 8-year-old daughter, Kaylee, remain in critical condition. Timmons’ 2-year-old daughter, Mkena, is in serious condition and her 2-month old daughter, Jaydn, is in good condition. The cause of the explosion in Tracy Saturday morning is still under investigation. Neighbors came to the aid of the family following the explosion and fire, with one calling 911 while another went into the house and rescued the baby. Timmons and her other two daughters had already made it outside. The house is reportedly a total loss.