38-year-old Ryan Matson, of Stonington, Maine, was cleaning his .45 caliber handgun in his kitchen when he unintentionally discharged the weapon.
The bullet hit his leg and continued on and hit his 4-year-old daughter, Riley, in the thigh. Riley was sitting next to her father at the time.
They were taken to the hospital in Bangor where they were treated and released. Authorities say no charges are expected.
This is the second shooting within a week involving a young child in Maine. On Wednesday a man shot his 3-year-old daughter in the neck. A neighbor believes it was an unintentional shooting although it is still being investigated. The child was taken to the hospital in critical condition and remains hospitalized.