The teen who allegedly blew through a red light and caused a wreck that killed a 52-year-old cyclist was arrested Wednesday — more than a week after the horrifying incident.

Cops collared Mirza Baig, 18, of Queens on a manslaughter indictment from the Brooklyn District Attorney. Authorities threw the book at Baig — hitting him with manslaughter, criminally negligent homicide, vehicular assault, criminal facilitation, disobeying a traffic device and speeding, among a total 11 charges.

Baig allegedly flew through a red light in his gray Dodge sedan at the intersection of Coney Island Avenue and Avenue L in Midwood on Aug. 11, striking a blue Honda SUV and sending it careening into Jose Alzariz, who was approaching the crosswalk on his bicycle.

Alzariz was the 19th cyclist killed in the city this year.

Baig was arraigned in Brooklyn criminal court on Wednesday, where his lawyer Jeffrey Lewisohn repeatedly insisted the killing was an “accident.”

“He was in an accident. A tragic accident. And now it’s got criminal charges,” Lewisohn said. “It’s not appropriate.”

Baig posted a $10,000 cash bail and was expected to be released Wednesday afternoon.

His next court date is Oct. 23.

Additional reporting by David Meyer