A 72-year-old woman has died after being injured at St Boltophs Crescent in Lincoln lived in a quiet residentlal street mainly occupied by other elderly residents.
Officers from Lincolnshire Police are focusing their investigations around a block of maisonettes in the street.
A 38-year-old man is being questioned by police on suspicion of murder.
More top news
The England Illegal Money Lending Team are launching a campaign in the Midlands to raise awareness of the dangers of loan sharks.
FA Cup-winning Harry Redknapp will meet players and coaching staff from the Homeless FA.
The Liberal Democrat leadership candidates are holding their East Midlands hustings tonight.