STATEN ISLAND, N.Y. -- A Clifton teen's problems with the law just keep growing.

Michael Kish racked up his third arrest in a week when authorities busted him on Thursday for allegedly scrawling graffiti on a city bus last week.

Kish, 19, was arrested at Stapleton Criminal Court where he had gone to answer separate charges accusing him of suggesting on an Instagram post to shoot cops.

Kish's latest arrest stems from a May 4 episode on a city bus.

According to a criminal complaint and law enforcement source, the graffiti was found inside a bus around 1 p.m. after it returned to the New York City Transit depot on Castleton Avenue in West Brighton.

The source said Kish and an accomplice, who remains at large, were seen on a videotape surveillance camera inside the bus, scratching out graffiti with a marker near the back of the vehicle.

The pair defaced walls, seats and dividers, said the criminal complaint.

Kish was charged with felony and misdemeanor counts of criminal mischief, according to information from Acting District Attorney Daniel L. Master's office.

He's also accused of making graffiti.

Kish was scheduled to be arraigned Friday at Stapleton Criminal Court on those charges.

The defendant was originally arrested last week on charges accusing him and Schlagler of scrawling swastikas, the words "White Power," and other racial epithets at the Eltingville train station more than two weeks ago.

The graffiti included what investigators believe is Schlagler's Instagram handle, and that led police to Kish's account, law enforcement sources said.

Investigators then found a conversation about a month ago detailing what's thought to be Schlagler's recent arrest on a bench warrant, sources said.

Kish, posting as "hurt_shoulder," then wrote, "He's out. Let's shoot some cops in their patrol cars," followed by "emoji" images of a smiling police officer, an alien and three guns, authorities allege.

He continued, "(Expletive) the #NYPD bunch of (expletive). (Expletive) the squad that got lit up in Brooklyn, and (expletive) their families," police allege.

Sources said that's likely a reference to the fatal ambush of NYPD Officers Rafael Ramos and Wenijan Liu in Brooklyn on Dec. 20.

A photo posted under "hurt_shoulder" shows Kish holding what appears to be a gun to the camera, with the comment, "Oh how I wish your head was at the other side of this barrel," according to law enforcement sources.

Investigators tracked the Internet address of the Instagram account to Kish's home -- the same address he listed on a Sanitation Department job application, the complaint alleges.

Police re-arrested Kish when he returned to court on Wednesday for the April 28 graffiti case.

Prosecutors charged him with fourth-degree criminal solicitation, a misdemeanor punishable by up to a year in jail.

Kish posted $1,000 bail in that case, and has also posted $1,000 bail for the alleged April 28 graffiti incident.

In that matter, he and Schlagler are charged with three felony counts of first-degree aggravated harassment, which includes a hate-crime component, as well as misdemeanor counts of criminal mischief and making graffiti.

Kish's next court date in those cases is June 10.