Sania, Shoaib blessed with baby boy

Indian tennis star Sania Mirza has given birth to a baby boy, her Pakistani cricketer husband Shoaib Malik said on Tuesday, prompting a flood of congratulatory messages on social media.

"Excited to announce: It's a boy, and my girl is doing great and keeping strong as usual #Alhumdulilah. Thank you for the wishes and Duas, we are humbled. #BabyMirzaMalik," Malik tweeted.

Mirza and Malik enjoy a high profile owing to their successful sports careers and their unusual marriage straddling the border of nuclear-armed rivals India and Pakistan.

"It's a boyyyy!!!!" Mirza's her younger sister, Anam Mirza, wrote on Instagram.

Malik's manager and agent, Ameem Haq, said the former Pakistan captain was "over the moon" to become a father.

"#BabyMirzaMalik boy is here! Baby and mother are all smiles, the dad is over the moon," Haq tweeted.

Mirza, who is a three-time Grand Slam doubles winner, announced her pregnancy in April.