Four people were killed, including a child, when a helicopter slammed into a radio tower behind homes in Houston’s Second Ward, causing a fiery explosion and toppling the structure and scattering debris through the neighborhood,

The National Transportation Safety Board said in a statement that it is investigating the crash of the Robinson R44 II helicopter, which preliminary information shows was operating as an air tour

Four people, including a child, were killed when a helicopter crashed into a radio tower in Houston, officials said.