He arrived at the Mumbai airport along with his wife Meena on Wednesday.
"We will step up the security cover given to Lt Gen KS Brar. The security will be as much as required," Maharashtra home minister RR Patil told reporters on the sidelines of a function in Mumbai.
Patil added that the state government had provided protection to Lt Gen Brar (retd) in the past as well.
Brar had led Operation Blue Star to flush out pro-Khalistan Sikh militants from the Golden Temple in 1984.
After their arrival in Mumbai on Wednesday, Brar, who had a bandage on his neck and cheek, and his wife were escorted to their vehicle amid tight security.