Police were called at around 2.15pm yesterday (Wednesday, October 13) to reports of a disturbance on Malden Road, Watford.
Officers attended and located a man who had sustained suspected stab wounds. He was taken to hospital by ambulance. His injuries are not thought to be life-changing or life-threatening.
Officers, including the police helicopter, armed response unit and dog unit, searched the area and two people were subsequently arrested.
A 17-year-old boy and a 20-year-old man, both from Watford, were arrested on suspicion of wounding with intent to do grievous bodily harm.
The teenager remains in police custody at this time, while the 20-year-old has been released under investigation while enquiries continue.
Detectives are investigating and anyone with information about the incident is asked to report it.
You can report information online at herts.police.uk/report, use online web chat at herts.police.uk/contact, or call the non-emergency number 101 quoting crime reference 41/79733/21.