HOUSTON — A hacker apparently accessed private photos and emails sent between members of the Bush family, including both former presidents, and the Secret Service is investigating.

The Smoking Gun website said the hacker, who went by the online moniker “Guccifer,” gained access to emails, photos, private telephone numbers and addresses of Bush family members and friends.

The website displayed photos it said came from the hacker, including one that purported to show the elder Bush during his recent stay in a Houston hospital, where the 88-year-old spent almost two months being treated for complications from a bronchial infection.

The authenticity of the photos and other details on the website could not immediately be confirmed. A spokesman for former President George H.W. Bush declined to comment on the reports.