Two Secret Service agents are under investigation for taking photos of themselves with President Donald Trump's sleeping 8-year-old grandson, Mother Jones is reporting.

According to the magazine, the incident happened last weekend when the agents were assigned to protect Donald Trump III while driving him from Westchester County, N.Y., where the president's family has an estate, to Manhattan.

"Trump III was sleeping in the car when the agents began to take selfies with him while he was asleep," Mother Jones said. "Trump III woke up and, as the source framed it, 'freaked out.'"

The boy reportedly told his mother, Vanessa Trump, who informed her husband, Donald Jr. about it.

Mother Jones says the Secret Service has confirmed it is investigating.

"The U.S. Secret Service is aware of a matter involving two of our agents and one of our protectees," Mother Jones quoted the protection service. "Our Office of Professional Responsibility will always thoroughly review a matter to determine the facts and to ensure proper, long-standing protocols and procedures are followed.

"The Secret Service would caution individuals to not jump to conclusions that may grossly mischaracterize the matter."

The New York Post reported that President Donald Trump has a good relationship with his Secret Service detail and notes the incident with his grandson is being investigated as an isolated one.