Police continue to appeal for anyone who was in the area of Gun Steet around 3.30am to 4am last Wednesday that may have witnessed the incident, or with any information that assists investigations, to come forward.
If you have any information please contact Det Insp Sue Upton via the Thames Valley Police Enquiry Centre on 101quoting URN 489 of 31/7.
If you don't want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at crimestoppers-uk.org. No personal details are taken, information is not traced or recorded and you will not go to court.
More top news
Former PM David Cameron has a family fight on his hands - over who will get to use the new luxury Shepherd's Hut at his Oxfordshire home
Philippa has Sunday's weather for the east
Philippa has Sunday's weather for the west