Gary Finlay has been arrested on suspicion of murdering Graham McKenna and the attempted murder of his son, 14-year-old Michael.
Police said the 46-year-old, who has been wanted for questioning by officers investigating the double stabbing, was arrested in Birkenhead.
Mr McKenna, who was 45, died of his injuries on Saturday, January 10, as he was walking with his son to a bus stop in Claughton.
His funeral service is due to take place on Monday, at noon, at Our Lady's Church, Cavendish Street, Birkenhead, followed by burial at Frankby cemetery at 2pm.
More later...
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