The 26 year-old St Kilda man entered the family restaurant near the Queen Victoria Market at about 3.30pm today and began injecting with a needle near shocked patrons.
Andrew Kahn, of Adelaide, had travelled to Melbourne for a weekend away with his wife and children and had just visited the Vic Market when he saw the drug user – with his pants slipping down – in the corner of the McDonald’s.
”He came in and started shooting up, right near a family with kids,” Mr Kahn said.
”I told a staff member it was happening and she said sorry, the manager isn’t in at the moment.
”The guy was still there and started nodding off in the corner.”
Diners were further outraged when the restaurant closed its upstairs dining area during the ordeal meaning families had to sit near the drug user in the crowded ground section.
Mr Kahn said authorities were called when he approached staff a second time.
A police spokeswoman said ambulance officers treated the man when he became aggressive and was handcuffed by police.
He was taken to the Royal Melbourne Hospital.
Mr Kahn captured a photo of the man on his phone showing him in a delirous state crouched near the front window of the restaurant.
McDonald’s spokeswoman Laura Keith said: ”As soon as the manager became aware of the man he asked him to leave.
”The man refused and the police were called right away. The manager spoke to police twice on the phone before they arrived, arrested and removed the man from the restaurant. The dining area was then cleaned thoroughly.”