A major manhunt was launched for Abdul Ezedi following a chemical attack in Clapham, south London.
The 35-year-old convicted sex offender fled the scene with later images of him showing "significant injuries" to his face.
Here Sky News traces his movements, including the last confirmed sighting just a few hours after the attack on Wednesday 31 January.
7.25pm - The attack takes place in Lessar Avenue on a 31-year-old woman, who was with her daughters, aged three and eight. Ezedi allegedly throws the younger child to the ground and makes off in his car, which crashes into a stationary vehicle nearby. He then runs off.
7.33pm - Ezedi boards a train at Clapham South Tube station.
7.59pm - He leaves that train at King's Cross Tube station.
8.42pm - Ezedi was spotted on CCTV leaving a Tesco in Caledonian Road, close to King's Cross Station, having bought a bottle of water. After exiting the shop, he turns right.
9pm - He enters King's Cross Tube station and boards a Victoria Line Tube southbound.
9.10pm - Ezedi arrives at Victoria Station and then boards a District Line Tube eastbound at 9.16pm.
9.33pm - He is seen leaving Tower Hill Underground Station.
9.47pm - Ezedi is seen on Allhallows Lane in the City of London. He travels through a passage to Cousin Lane and then turns right, walking towards Upper Thames Street.
9.51pm - He turns left on to Upper Thames Street and travels along the street at 9.54pm.
Suspect most probably dead, police say
Clapham attack victim just wanted safe home for her children
9.59pm - Ezedi passes the City of London School in Paul's Walk, heading towards Blackfriars Bridge, passing the riverboat pier.
10.04pm - He passes the Unilever building and heads towards Victoria Embankment.
10.06pm - Ezedi passes Carmelite House, at the junction with Carmelite Street, heading towards Temple.
10.28pm - He passes Westminster Pier, goes up the steps and continues towards Westminster.
10.33pm - He is seen walking south on Westminster bridge.
10.36pm - Walks across Westminster Bridge, heading down the steps on the London Eye side towards Lambeth.
10.42pm - Is seen walking west on south Thames Path towards Lambeth Bridge.
10.55pm - Travels along the Albert Embankment approaching Vauxhall Bridge.
11.00pm - Crosses Vauxhall Bridge towards stairs on the Houses of Parliament side of the river.
11.03pm - Crosses Vauxhall Bridge Road, into Grosvenor Road.
11.10pm - Walks westbound past the Shell petrol station.
11.19pm - Passes the Thames Water Building, Grosvenor Road, heading towards Chelsea Bridge.
11.25pm - Crosses over Chelsea Bridge and enters Battersea Park.
11.27pm - His last known movement is to cross back over Chelsea Bridge towards the north side.