Four people were injured after having the liquid thrown at them in the footbridge between the shopping centre and Chafford Hundred station on Monday, 25 February.
Callum Kitson, 18, of Charles Street, Grays, has been charged with possession of an offensive weapon, affray and four counts of administering poison with intent to endanger life.
He is due to appear today at Basildon Magistrates’ Court.
A 17-year-old from Grays has been charged with theft and threatening behaviour, following a separate but linked incident.
He is due to appear at Basildon Youth Court on Tuesday, April 2.
He is also being investigated in relation to the substance attack and has been bailed until Tuesday, 19 March.Tags: Grays, Lakeside, Chafford Hundred
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