Service along the W train line resumed Wednesday night after nearly 100 windows were shattered on several dozen trains, officials said.

A vandal or vandals smashed 97 windows on Tuesday and Wednesday, impacting N, Q, R, W, B, D and F train service, according to MTA officials.

The New York City Transit Authority expects to run full W train service during Thursday's morning commute, with the trains departing the Ditmars Boulevard station around 6 a.m.

The damage was so extensive that the MTA no longer had enough trains without shattered windows to continue running service along the W line, New York City Transit President Richard Davey said at a press conference Wednesday. 

Service on the W line was suspended at 6:50 p.m. Tuesday, the MTA said.

“I often say we don’t get it perfect at New York City Transit — we try like heck — but yesterday, to have, as I said, a group of individuals or individual disrupt the commute of hundreds of thousands of New Yorkers, and probably cost tens of thousands, if not more, dollars to repair these windows is outrageous,” Davey said, before promising to bring those responsible to justice.

“I don’t know of a place that has more cameras than a Las Vegas casino than we do. We will find you. We have your picture, I have no doubt. We will prosecute you to the fullest extent of the law,” Davey added.

NYPD Chief of Transit Michael Kemper said at the news conference that it was too early to say whether the vandalism took place while the trains were parked in a train yard or while they were in service. Davey said that it appeared all the damage occurred from the inside of the trains, not outside.

The MTA advised commuters in Queens to take 7 or N trains or Q102 buses while W line service was suspended. The transportation agency advised commuters in Manhattan to take N, Q or R trains.

The MTA is urging anyone with information about the vandalism to tell a police officer or an MTA employee, or call NYPD CrimeStoppers at 1-800-577-TIPS.