The incident happened both inside and outside of Caffé Nero in Davygate at 12.32pm on Saturday (January 20).
North Yorkshire Police urge anyone who saw the incident to get in touch.
"We’d particularly like to hear from anyone who saw any part of the incident or if any weapons were seen," a force spokesperson said.
YOU’LL FIND MORE ON THIS STORY AND OTHERS AT www.yorkpress.co.uk OR PICK UP YOUR COPY OF THE NEWSPAPER ITSELF AVAILABLE SIX DAYS A WEEK AT YOUR LOCAL NEWSAGENT
Haxby Station remains on track to be 'delivered within this Parliament'
'Haxby Station remains on track to be delivered within this Parliament' says regional Mayor David Skaith
Thousands of visitors expected at huge agricultural machinery show on Feb 4th
York Auction Centre to host YAMS event.
Three people trapped in York park after gates locked
Firefighters rescue three people trapped in Acomb park.
Transform York named as one of the best gyms in the city
THE owner of a York gym which has just gone through a brand transformation is celebrating an award shortlisting.
Calls in York for social media ban for under-16s
A YORK MP has called on government to ban social media for under-16s, saying "let kids be kids".
Two people stuck in lift in busy shopping street in York
TWO passengers have been trapped in a city centre lift in one of York's busiest retail streets.
Pothole at major York junction 'an accident waiting to happen'
York resident's concerns over pothole at Water End junction
Traditional pub in York town gets one-star for food hygiene
The Cottage Inn at Haxby gets one-star for food hygiene.
Brought to you in association with Flamingo Land Resort. 
8°C
8°C
7°C
6°C
YO1 RADIO – YORK 102.8FM & NORTH YORKSHIRE'S LOCAL RADIO STATION
Nick Hancock in the Morning playing Enola Gay by OMD
