Meghan Markle at Prince Harry polo match

LONDON — American actress Meghan Markle has attended a celebrity polo match near London where Prince Harry was playing, increasing British press speculation about their relationship.

Photographs from Saturday’s Audi Polo Challenge in Coworth Park, 42 kilometres west of London, showed Markle on the sidelines. It is being described as her first public event with Harry. The Sunday Telegraph published a grainy shot of Markle under the headline “It’s Getting Serious: Meghan’s High-Society Debut.’’ The Sunday Mirror said “Meghan Makes her Markle at Harry Polo.’’

Prince Harry’s office at Kensington Palace did not comment on the images.

The palace said in a statement Saturday that Prince Harry and his brother, Prince William, have taken part in polo fixtures since 2007 to raise money for charity, bringing in 10 million pounds ($12 million).

Prince Harry, 32, confirmed last year that he was dating 35-yearold Markle, who is known for her portrayal of paralegal Rachel Zane in the television show, “Suits.’’ She has also appeared on “General Hospital,’’ ‘’CSI: Miami,” ‘’Without A Trace” and ‘’Castle.”