WATCH: Melania Trump, Michelle Obama speeches side by side

Donald Trump's wife Melania is under fire for allegedly plagiarizing US first lady Michelle Obama's 2008 speech. Watch this video.

The controversial issue had gone viral after an independent journalist discovered striking similarities between Mrs. Trump's speech during the opening night of the Republican National Convention on July 18, 2016, and Mrs. Obama's address to the Democratic National Convention on August 25, 2008.

Transcripts:

Trump said on Monday:

"From a young age, my parents impressed on me the values that you work hard for what you want in life, that your word is your bond and you do what you say and keep your promise, that you treat people with respect. They taught and showed me values and morals in their daily lives. That is a lesson that I continue to pass along to our son.

And we need to pass those lessons on to the many generations to follow. Because we want our children in this nation to know that the only limit to your achievements is the strength of your dreams and your willingness to work for them."

Obama said almost 8 years ago:

"And Barack and I were raised with so many of the same values: that you work hard for what you want in life; that your word is your bond and you do what you say you're going to do; that you treat people with dignity and respect, even if you don't know them, and even if you don't agree with them.

And Barack and I set out to build lives guided by these values, and to pass them on to the next generation. Because we want our children -- and all children in this nation — to know that the only limit to the height of your achievements is the reach of your dreams and your willingness to work for them."

Video:


Reaction:

Former Trump campaign manager Corey Lewandowski told CNN that whoever wrote the speech should be held accountable and get fired.

There have been reports pointing to top Manafort deputy Rick Gates as the person in-charged to oversee the entire speech process. He denied it and said "absolutely not."

Amid the plagiarism issue, Donald Trump was formally announced as Republican nominee for president of the United States while Indiana Governor Michael Pence was nominated as his vice presidential running mate.