Swedish train operator investigates after pregnant woman forcibly removed from train

The incident occurred on a metro train in the Swedish capital, Stockholm.

(CNN)A Swedish train operator is investigating the forcible removal of a pregnant woman from a train in Stockholm.

A video clip posted on social media shows security guards working for Stockholm public transport authority SL dragging the woman off the train and pushing her down onto a bench on the platform.
The woman had allegedly refused to accept a fine after failing to show a valid ticket, according to transport officials. Security guards stepped in after she allegedly became aggressive.
    The woman's daughter can be seen crying as she tries to hold on to her mother, before another security guard leads the child away.
    "In these two videos you can see the victim dragged out of the train, her child taken from her and whilst she attempts to stand up she is held down," wrote popular blogger and activist Lovette Jallow, who posted mobile phone footage of the incident on Instagram.