Sonya Consiglio, 33, of Mgarr is in critical condition after she was hit by a motorcycle at Sa Maison Hill, Floriana yesterday afternoon.
The police said the motorcycle was being ridden by a 22-year-old man from Sliema.
Sources said Ms Consiglio was suffering from head injuries and was in danger of dying.
Magistrate Consuelo Scerri Herrera has appointed a team of experts to help her in an inquiry.