Mumbai, Sep 8 : Bollywood superstar Akshay Kumar's mother Aruna Bhatia passed away on Wednesday morning. Akshay took to Twitter to express his grief. "She was my core. And today I feel an unbearable pain at the very core of my existence," he wrote. The 53-year-old star said that his mother passed away peacefully. "My maa... Smt Aruna Bhatia peacefully left this world today morning and got reunited with my dad in the other world. I respect your prayers as I and my family go through this period. Om Shanti," he wrote. On Tuesday, Akshay had shared a health update about his mother and said that it was a "tough hour" for his family. "Touched beyond words at your concern for my mom's health. This is a very tough hour for me and my family. Every single prayer of yours would greatly help," he wrote on Twitter. /IANS