Police officers have been seen searching leaves and bushes inside a cordon in Chandler's Ford.
The search was spotted in the cordoned-off area following the stabbing of five teenage boys.
Officers were using rakes as well as conducting a finger-tip search.
A spokesperson for Hampshire police said officers were called just after 10.30pm on October 31 to reports that the boys had been stabbed.
All five, three aged 16 and two aged 17, were taken to hospital with serious injuries.
The spokesperson said an unknown group had gained entry to a party at an address in Park Road.
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The spokesperson said scenes were in place in Park Road and Valley Road while enquiries continued.
Officers have spoken to witnesses, identified available CCTV and other footage, and made enquiries at neighbouring houses and in nearby streets.
Senior investigating officer DCI Elizabeth Pirie appealed to anyone at the party who has not spoken to officers, or anyone with relevant footage, to get in touch.
She said: "Any information, however small it may seem, could help our enquiries."
Anyone with information can call 101, quoting reference 44260534624, or contact Crimestoppers anonymously on 0800 555 111.
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