A mother and son were knifed outside their home.
The woman, aged 53, received cuts to her face while her 20-year-old son was stabbed.
Last night his injuries were described as serious but not life threatening.
The mother and son were attacked after a group approached their home during the early hours of Saturday.
The man was taken to hospital. His mother was also taken to hospital for treatment.
The pair were attacked after a fight broke out just outside their home in Jubilee Road, Sidley, Bexhill, close to the junction with Southlands Road.
Police arrested a 28-year-old man on suspicion of causing grievous bodily harm.
Last night he was in custody and being questioned by officers.
Police are appealing for witnesses to contact them on 0845 6070999 or Crimestoppers anonymously on 0800 555111.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here