Fifth Harmony's Ally Brooke Hernandez has urged fans to be "careful and gentle" after she was ambushed at a Mexico airport on Wednesday (28Sep16).

The Work from Home singers landed in Monterrey, Mexico on Wednesday ahead of their concert in the city and video footage taken of their arrival shows a fan running up to Ally Brooke with a cell phone to grab a selfie with her as she walks through terminal.

However, when a member of their security pushes the fan out of the way, he grabs Ally with both hands and drags her with him, almost pulling her to the floor. Security intervenes and helps the girls get through the crowd.

Ally Brooke took to Instagram to post a message to assure followers she was fine but made sure her fans learned from it.

"Hi my loves, just to let you know, I am okay after the airport incident," she wrote. "Please be careful and gentle so nobody gets hurt. That was scary. Thank you!

"Monterrey, I couldn't be happier to be here! It's been a dream of mine since I was little. My favorite singer Selena Quintanilla had many beautiful performances here. And I get to perform in this city! I am beyond honored & proud."

She ends her post with crying face, praying hands, and love heart emojis and "Te amo", Spanish for "I love you".

Following their Monterrey concert on Thursday (29Sep16) the girls have one more stop in Guadalajara, Mexico before beginning the European leg of their 7/27 tour, which kicks off in Dublin, Ireland on 4 October (16).

Their European trek has been shorted for unknown reasons, with five gigs across France, Germany and Switzerland being axed without explanation earlier in September (16).