By Jessie Pang and James Pomfret HONG KONG (Reuters) -Hong Kong pro-democracy media tycoon Jimmy Lai was given medication and a heart monitor on Monday for the start of final submissions in a landmark national security trial after concerns over his health delayed proceedings last week.

Lai is accused of colluding with foreign forces under the controversial national security law, which Beijing imposed.

A Hong Kong court heard final arguments Monday in the landmark national security trial of former pro-democracy newspaper founder Jimmy Lai, who could be sentenced to up to life in prison if convicted.