April 5 (Reuters) - The state of Texas on Saturday said

it opened a probe into WK Kellogg, saying the breakfast

cereal maker could be violating state laws by advertising its

products as "healthy."

The office of state Attorney General Ken Paxton said in a

statement that some of the company's breakfast cereals - which

include Froot Loops, Apple Jacks and Frosted Flakes - "are

filled with petroleum-based artificial food colorings that have

been linked to hyperactivity, obesity" and other health

problems.

Paxton's office said the company had removed artificial food

colorings in Canada and Europe but not in the United States.

"In no world should foods that include these dyes be

advertised as healthy," Paxton said in the statement.

WK Kellogg didn't immediately respond to a request for

comment.