Unai Emery could not hide his frustration at a poor second-half display as Arsenal were held to a 1-1 draw at Brighton.

During the second half, the Gunners failed to restore the lead given to them by Pierre-Emerick Aubameyang's fourth-minute goal, and it cost them all three points. A mistake by Arsenal right-back Stephan Lichtsteiner had allowed Jurgen Locadia to equalise in the 35th minute and Emery admitted his side had fallen short. "I think the key today was the first 45 minutes," he said. "We controlled the match like we want, we scored and had two good chances from Aubameyang to get the second - but their keeper saved. "But then they equalised. From then, it gave us the second half to try again to control the match, create chances and be able to win - but we didn't do that." Meanwhile, Emery also apologised after kicking a water bottle against a Brighton supporter towards the end of the game as his frustration got the better of him. The Gunners manager spoke to the fan immediately and then again at the final whistle. He added: "I said to them apologies because I kicked the bottle after a disappointing action for us in the last minutes. It wasn't hard, but it touched one supporter for them. I said to them I'm sorry.