Premature babies, seizure like symptoms?

Hello everyone. Question is about a family's premature baby. It was born 2 months early, so its definitely premature, but far away from the boundaries of medical science. The baby was doing good, as far as premature babies do. It was hooked up to a machine to help with breathing.

My question is i just found out that the baby had seizure like symptoms last night. It tensed up and twitched. Its hard to tell if it is actually a seizure or not just visually, but it is in the hospital right now hooked up to machines waiting for another episode. I understand that premature babies have a very high chance of having motor complications the first few years of life, which could cause stiffness and twitching. Could it be anything other than either motor skill complications or seizures? Anyone out there have a premature baby that does this?

This is not my kid. I don't have any kids. And this kinda scares me because of the increase in premature babies, especially with this lady. She was extra cautious, no smoking no drinking, no lifting, no doing any hard activities, watched what she ate, no loud noises, etc and still had a premature baby.