(CNN) Two Arsenal football club players will not travel with the team to play against Newcastle United on Sunday, after the club withdrew them over security concerns.

Arsenal said in a statement Friday that Mesut Özil and Sead Kolašinac weren't traveling because the pair had been subjected to "further security incidents which are being investigated by the police."

Özil and Kolašinac were subjects of what appeared to be an attempted robbery in London in July. Dramatic CCTV video showed Özil and Kolašinac being approached by masked men who had pulled alongside their vehicle on a moped in north London.

The video was shared widely on social media, and showed Kolašinac leaping out of the car to confront both men, before chasing them away.

Following the confrontation, London's Metropolitan Police Service (MPS) released an incident report detailing an attempted robbery, but didn't release the names of the victims. It was widely reported that the attackers brandished knives, but police did not comment on that detail.

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