New York, Jan 25: Director James Cameron is apparently planning to release two sequels to his 3D blockbuster `Avatar' a year apart in 2014 and 2015.

According to Entertainment Weekly, Cameron is currently writing the sequels to the highest-grossing film of all time.

"We are planning to shoot them together and [do post-production work on] them together, and we will probably release them not quite back to back, but about a year apart. Christmas '14 and '15 is the current plan," the New York Post quoted Cameron as saying.

Cameron said the characters who were still alive at the end of `Avatar' will return for the sequels, "at least in some form." (ANI)