The reality show couple cited an altercation that occurred six months ago, in which police were called to the home they share with their two children, as a factor in their decision.
"Like many couples, we have had challenges in our marriage," the pair said in the statement to People. "We had an unfortunate misunderstanding about six months ago and the police were called to our house in an abundance of caution. There was no violence and no charges were filed."
In May, police responded to "a call of a possibly suicidal male with a gun" at the couple's home, TMZ reports. Tarek allegedly ran from their Orange County house with a gun and onto a hiking trail. After he was spotted by a helicopter, Tarek reportedly told officers he only wanted to "blow off steam" and had no intention of self-harm.
Tarek and Christina tied the knot in 2009 and have two children, 1-year-old Brayden and 6-year-old Taylor.
As for Tarek and Christina's very successful HGTV show Flip or Flop, which follows the couple as they flip houses in California, Tarek and Christina say they "plan to continue our professional life together."