The singer was said to be on good terms with the mother of his child Briana Jungwirth. However, things seem to have gone awry with the fashion stylist allegedly demanding more money, reports tmz.com.
Insiders close to Tomlinson, 24, have claimed that she is "using" their one-month-old son, Freddie Reign, to score more money than their current agreement.
It has been claimed that he has had a DNA test, but insists that there is no doubt that Freddie is his child because the couple was dating exclusively in the time that Jungwirth fell pregnant.
Tomlinson will reportedly be asking a judge to order Jungwirth to give him custodial rights, as well as more access to their son.(IANS)