A 69-year-old was attacked on Bankend Road on Friday, December 20.
Now a 16-year-old boy has been charged in connection with a serious assault.
He was released on an undertaking to appear at Dumbarton Sheriff Court at a later date.
A spokesperson for Police Scotland said: “A 16-year-old male youth has been arrested and charged in connection with a serious assault in Dumbarton.
“Around 7.40pm on Friday, 20 December, 2024, a 69-year-old man was seriously assaulted on Bankend Road.
“The 16-year-old was released on an undertaking to appear at Dumbarton Sheriff Court at a later date.
“A report will be submitted to the Procurator Fiscal.”
