Celine Dion attended a Coldplay concert over the weekend in a rare public appearance by the singer amid her health challenges.

Coldplay lead singer Chris Martin surveyed the flags and handwritten signs among the Stanford Stadium crowd when he spotted a Palestinian flag. He acknowledged and welcomed the flag holder, but promptly issued a warning to anybody at the concert on Saturday,

Celine Dion was in the crowd at Coldplay's recent concert in Las Vegas, and the legendary singer was left beaming as she was given a touching tribute by frontman Chris Martin

Doors for the concert open at 5 p.m. on Friday, June 13, and Saturday, June 14. Here's what to know about opening acts and when Coldplay will perform.

After stops in Las Vegas and Denver, Coldplay is set to hit the Borderland for a two-night stand at El Paso's Sun Bowl Stadium on Friday, June 13 and Saturday, June 14. In July, the band will travel overseas for a series of shows in Canada before returning to the United States for stops in Massachusetts,

From the opening, Coldplay lived up to its billing for delivering crowd-pleasing tunes along with eye-popping visual effects in its concerts