Three people have been charged with attempted murder and one with assisting an offender following the alleged stabbing on Trinity Street, in Boston, on Saturday.
A Lincolnshire Police spokesman confirmed three men and a woman had been charged.
Aleksandr Kudriasov, 40, of Glen Drive, Andis Apsitis, 36, of no fixed abode, and Mark Gidevic, 27, of Granville Street, were all charged with two counts of attempted murder.
Marina Erte, 32, of Glen Drive, has been charged with assisting an offender.
All four will appear before Lincoln Magistrates today (Tuesday).
Three others who were arrested and released on bail previously remain so.
The incident at a flat in Trinity Street, saw two people taken to hospital with injuries which were believed to be caused by stabbings.
The altercation, was originally reported to have happened on West Street.
Police believe there may be a connection to a car which had been parked in the PC World car park.