Passengers reported chaos on Greater Anglia services this afternoon after a police incident disrupted services through Bury St Edmunds.
Officers from Suffolk police stopped and searched two men shortly before 1pm today within the railway station.
A police spokesman said one of them resisted arrest and ran onto the railway tracks.
Trains were suspended temporarily while police dealt with the incident.
A 22-year-old man was arrested on suspicion of possessing an offensive weapon, while an 18-year-old man was arrested on suspicion of possessing a knife/bladed article and aggravated burglary in connection with a separate incident.
The two men are currently being questioned in police custody.
A Greater Anglia spokesman tweeted earlier today: "Due to trespassers on the railway at Bury St Edmunds all lines are blocked. Train services through this station may be subject to disruption on all routes. Disruption is expected until 14.00."
Rail services on the line, which runs from Ipswich to Cambridge, are now back to normal.
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