(Changes slug, updates with lockdown lifted, reaction) By Steve Keating MIAMI, March 25 (Reuters) - The Sony Open in Miami was locked down while the bomb squad investigated a suspicious package on Tuesday, preventing thousands of spectators from entering or leaving the sprawling tennis complex. "Earlier this evening a suspicious package was left unattended at the front gate," the tournament said in a statement. "We apologise for the inconvenience but the safety of the public must be placed first." Word first began to filter through that people were not being allowed to leave the facility as world number one Serena Williams was playing fifth seeded German Angelique in a quarter-final on centre court. Click here to read full news..