Suspects evaded a police helicopter and dog unit search after a reported robbery with a blade.

A man in his 30s was approached by two males wearing black puffer coats and balaclavas in Cassiobury Park, Watford, at around 10.15pm last night (June 12).

One of the men was apparently armed with a bladed weapon and the pair assaulted the victim, stealing an orange and silver E-bike.

They were then seen riding off in the direction of Hempstead Road.

Police officers were deployed to search the area, alongside the police helicopter and dog unit, but no arrests were made.

Herts Police are continuing to investigate. Anyone with information is asked to call 101 or report it online, quoting crime reference number 41/47416/24.

The force is also investigating three robberies and two attempted robberies in Cassiobury Park, Cassiobury Park Avenue, and Shepherds Road since the start of this month which are being treated as linked.

They reportedly involved groups of around four to five males wearing face coverings and demanding mobile phones.

There were no reports of weapons being used in any of the cases.

A Herts Police spokesperson confirmed that the five incidents do not include the e-bike robbery last night, which is not being treated as linked to them.