An armed man was arrested at US President Donald Trump's Los Angeles golf course on Sunday, local time, after appearing to monitor security preparations two days ahead of a fundraiser, authorities say.The Los Angeles County Sheriff's Department said Jeanine John Taele, 38, was taking photos and video and had a 16-round magazine with ammunition in his pocket Authorities recovered a loaded pistol in his car.Law enforcement searched his home in the nearby city of Downey on Monday and found a plethora of firearms, magazines and ammunition, body armour and notebooks with "concerning statements".The sheriff's department announced the arrest as Mr Trump was preparing to arrive for a Republican National Committee fundraising dinner at the Trump National Golf Course in the suburb of Rancho Palos Verdes just south of Los Angeles.The department did not elaborate on what the notebooks' "concerning statements" were or whether the man was planning an attack on the president or event.Mr Taele was charged with several felonies, including second-degree robbery, receiving a large-capacity magazine and possession of a short-barrelled rifle or shotgun