He was taken in for questioning yesterday and has denied the charges during new police interviews.
Defence lawyer Urban Jansson told TT news agency that he is unable to assess the evidence against his client.
“I haven’t seen the evidence, there has only been a preliminary interview. They haven’t shown me anything (decisive) so I don’t have any idea about it,” he said.
“He doesn’t understand why he is a suspect, and I don’t either,” Jansson said.
The 78-year-old woman lost consciousness after she was punched in the face while trying to intervene on behalf of her 71-year-old partner who was being attacked by a man in a parking dispute on Monday. She died at the hospital in Lund on Wednesday.
The attacker fled the scene in a red Mazda. Police have impounded a similar vehicle that is owned by the 23-year-old man’s brother. The charge of aggravated assault is for the attack on the woman’s 71-year-old partner.
“We need more information or testimony from Landskrona residents, above all regarding the car and the driver of the red Mazsa,” Tommy Lindén of the Skåne police told TT.
Yesterday police took the 23-year-old in for questioning. They also searched his home in Landskrona.
The man has no history of major crimes, only a minor traffic offence. Police have interviewed four other individuals who are family members or close friends of the 23-year-old. None of them are suspected in the crime.
The prosecutor has until Monday morning to determine whether or not the 23-year-old should be remanded into custody.