Where is Paul's letter to the Laodicean believers?

Presenting to you the verse Colossians 4:16,

“After this letter has been read to your people, be sure to have it read in the church at Laodicea. And you should read the letter that I have sent to them”

Paul advises the christians in Colosse to read the letter that he had written to the believers in Laodicea. If we have all the written letters of Paul in the New Testament, where is Paul’s letter to Laodicea? What happened to it? 

Colossians 4:16

ESV - ¹⁶ And when this letter has been read among you, have it also read in the church of the Laodiceans; and see that you also read the letter from Laodicea.

Clarify • Share • Report • Asked October 01 2013 • Arun Kumar