Megastar Amitabh Bachchan, who is recovering from a mild ailment which laid him low, says he has undergone some medical tests.

The 73-year-old took to Twitter to give his well-wishers an update on his health.

"Begging apology again tonight...I have had some medical tests and need to rest. Ok? so see ya later," he tweeted.

Amitabh, who was last seen on action thriller film "Wazir" by director Bejoy Nambiar, will next be seen in debutant director Ribhu Dasgupta's "Te3N".

"TE3N" will also feature actors Vidya Balan and Nawazuddin Siddiqui in pivotal roles.