( CNN ) -- Brenda Cruz and her family were flabbergasted by what they spotted as they were driving on Interstate 77 in North Carolina this weekend : . A man was hanging on to the back of a fast-moving white sedan in the right-hand lane . `` All of a sudden the kids say , 'There 's someone on top of the car on the trunk , ' and I 'm like , 'What ? ' '' Brenda Cruz told CNN affiliate WSOC . The man was lying across the outside of the car 's trunk , she said , as the vehicle sped along at around 50 mph Saturday afternoon . She pulled out her cell phone and began to film the bizarre scene as other cars on the road slowed down , waiting to see what would happen . The family said they witnessed the man shattering the rear windshield before clambering inside the moving vehicle , which was being driven by a woman and had a child in a car seat inside . `` Whenever he lifted his hand to smash the glass open , it looked like it was something sharp , '' Brenda 's 17-year-old son , Samuel , told WSOC , saying he was concerned about what might have happened next . `` I 'm really worried because I just hope she 's OK , you know , with her kid , '' he said . Authorities said Monday that the incident began as a domestic dispute at a nearby Payless ShoeSource and continued on the highway . `` The female driver is the victim and will not be charged , '' said Keith Trietley , spokesman for the Charlotte-Mecklenburg Police Department . `` She chose not to prosecute the male suspect . They are known to one another and were involved in a domestic dispute . No one was injured during the incident . '' Trietley declined to identify the couple , noting that no charges have been filed . CNN 's Matthew Stucker contributed to this report .
NEW : Police say the incident was a domestic dispute . The suspect is in custody and will be charged with aggravated assault on an officer, resisting arrest and possession of drug paraphernalia. The car was being driven by a woman and had a child inside . The man smashed the rear windshield and climbed inside , witnesses say .