Durham police are investigating the assault of a 53-year-old man that took place at East End Park Friday.

At around 10:45 p.m. that night, four black male teenagers allegedly assaulted and attempted to rob the man, who was walking through the Durham park, according to a news release from Durham police spokesperson Kammie Michael. The incident took place near 1200 North Alston Avenue, less than a mile away from a similar crime that took place one week earlier.

The victim was taken to Duke University Hospital with critical injuries. The victim’s condition is currently unknown, and as of Monday afternoon, no charges had been filed.

On July 24, A 52-year-old man was assaulted in an attempted robbery while riding a bike at Long Meadow Park, near 900 Holloway Avenue. Like The suspects are also four black male teenagers.

The victim was also hospitalized and in critical condition. No update on his condition is available.

Both of these crimes took place in Northeast Central Durham, where police have recently intensified their presence to combat high levels of crime. There have been three assaults in the area since the police increased their efforts four months ago.

Anyone with information on the July 24 assault is asked to call Investigator Werner at 919-560-4440, ext. 29121 or CrimeStoppers at 919-683-1200.

Anyone with information on the July 27 assault is asked to call Investigator Little at 919-560-4281, ext. 29124 or Crimestoppers.